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Dr. Rhonda Patrick highlights a game-changing study: Sedentary 50-year-olds who did 5–6 hours/week of structured exercise (moderate + vigorous, including high-intensity intervals) for 2 years reversed ~20 years of heart aging. Their hearts became less stiff, more compliant, and structurally looked like healthy 30-year-olds — improving filling/pumping, exercise capacity,... and slashing risks for hypertension, heart attack, and heart failure. Key quote: "Their hearts looked 20 years younger in terms of structure... Holy cow." This is from Dr. Benjamin Levine's randomized trial (published 2018 in Circulation) — proof that it's never too late to fight cardiac aging, even starting in midlife. Motivating evidence: Exercise isn't just prevention — it can rewind the clock on your heart. What's your go-to way to hit vigorous movement this week?show more

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50-year-old sedentary people reversed 20 years of heart aging in just 2 years. Rhonda Patrick shared an incredible study: They took healthy but inactive 50-year-olds and put them on an intense exercise protocol (5-6 hours/week, including hard intervals like the Norwegian 4x4). After two years, their hearts structurally looked like 30-year-olds. It’s never too late. Vigorous aerobic exercise can induce "reverse remodeling" of the heart. Studies (including Ben Levine’s work) show it increases left ventricular mass and compliance in middle-aged adults, effectively making an aging, stiff heart more youthful and reducing long-term cardiovascular risk.

50-year-old sedentary people reversed 20 years of heart aging in just 2 years. Rhonda Patrick shared an incredible study: They took healthy but inactive 50-year-olds and put them on an intense exercise protocol (5-6 hours/week, including hard intervals like the Norwegian 4x4). After two years, their hearts structurally looked like 30-year-olds. It’s never too late. Vigorous aerobic exercise can induce "reverse remodeling" of the heart. Studies (including Ben Levine’s work) show it increases left ventricular mass and compliance in middle-aged adults, effectively making an aging, stiff heart more youthful and reducing long-term cardiovascular risk.

Camus

271,899 views • 20 days ago

How to reverse 20 years of heart aging Sedentary 50-year-olds followed a vigorous-intensity exercise protocol for 2 years By 6 months, they were doing 4-5 hours/week of training The end result... The structural changes in their hearts reverted by nearly 20 years That's the power of exercise It's literally medicine

How to reverse 20 years of heart aging Sedentary 50-year-olds followed a vigorous-intensity exercise protocol for 2 years By 6 months, they were doing 4-5 hours/week of training The end result... The structural changes in their hearts reverted by nearly 20 years That's the power of exercise It's literally medicine

FoundMyFitness Clips

48,721 views • 1 year ago

2 years of vigorous exercise in 50-year-olds was able to reverse the aging of their hearts by 20 years! Effectively making the heart look more like a 30-year-old's The power of exercise.... Astonishing, really

2 years of vigorous exercise in 50-year-olds was able to reverse the aging of their hearts by 20 years! Effectively making the heart look more like a 30-year-old's The power of exercise.... Astonishing, really

FoundMyFitness Clips

1,825,202 views • 2 years ago

Two years of structured, vigorous exercise reversed about 20 years of age-related structural changes in the hearts of sedentary 50-year-olds Under Dr. Ben Levine’s protocol, participants gradually built up to 5–6 hours/week of training, including Norwegian 4x4 intervals, endurance sessions, and strength work By the end, the size and stiffness of their hearts resembled those of a typical 30-year-old Vigorous exercise is powerful medicine

Two years of structured, vigorous exercise reversed about 20 years of age-related structural changes in the hearts of sedentary 50-year-olds Under Dr. Ben Levine’s protocol, participants gradually built up to 5–6 hours/week of training, including Norwegian 4x4 intervals, endurance sessions, and strength work By the end, the size and stiffness of their hearts resembled those of a typical 30-year-old Vigorous exercise is powerful medicine

FoundMyFitness Clips

407,396 views • 6 months ago

2 years of vigorous exercise in 50-year-olds was able to reverse the age-related structural changes of their hearts by up to 20 years Effectively making the heart look more like a 30-year-old's That's the power of exercise

2 years of vigorous exercise in 50-year-olds was able to reverse the age-related structural changes of their hearts by up to 20 years Effectively making the heart look more like a 30-year-old's That's the power of exercise

FoundMyFitness Clips

509,595 views • 2 years ago

Two years of vigorous exercise reversed about 20 years of structural heart aging in sedentary 50-year-olds By gradually building to 5–6 hours/week of training, participants reversed the shrinking and stiffening that comes with age The protocol: • Norwegian 4x4 intervals (once per week initially, later twice per week, eventually back to once per week) • Recovery aerobics (20–30 min. light exercise on days following intervals) • Endurance sessions (1+ hr. endurance training, plus a 30-min. base pace session weekly) • Strength training twice weekly The takeaway: even at 50, the heart can regain size and flexibility with enough structured training

Two years of vigorous exercise reversed about 20 years of structural heart aging in sedentary 50-year-olds By gradually building to 5–6 hours/week of training, participants reversed the shrinking and stiffening that comes with age The protocol: • Norwegian 4x4 intervals (once per week initially, later twice per week, eventually back to once per week) • Recovery aerobics (20–30 min. light exercise on days following intervals) • Endurance sessions (1+ hr. endurance training, plus a 30-min. base pace session weekly) • Strength training twice weekly The takeaway: even at 50, the heart can regain size and flexibility with enough structured training

FoundMyFitness Clips

209,342 views • 25 days ago

A 2-year exercise regimen reversed up to 20 years of heart aging in sedentary 50-year-olds By training 5-6 hours per week, their hearts became structurally younger—more like a 30-year-old’s The protocol used by Dr. Benjamin Levine’s team: • Norwegian 4x4 Intervals: 4 min. at the maximum intensity you can sustain (for a given pace, this is usually ~85-95% HRmax), 3 min. of low-intensity recovery (~70% HRmax), repeat 4x weekly • Recovery Aerobics: 20-30 min. light exercise • Endurance Sessions: 1+ hr. endurance training, plus separate 30-min. base pace weekly • Strength Training: Twice weekly Exercise is powerful medicine

A 2-year exercise regimen reversed up to 20 years of heart aging in sedentary 50-year-olds By training 5-6 hours per week, their hearts became structurally younger—more like a 30-year-old’s The protocol used by Dr. Benjamin Levine’s team: • Norwegian 4x4 Intervals: 4 min. at the maximum intensity you can sustain (for a given pace, this is usually ~85-95% HRmax), 3 min. of low-intensity recovery (~70% HRmax), repeat 4x weekly • Recovery Aerobics: 20-30 min. light exercise • Endurance Sessions: 1+ hr. endurance training, plus separate 30-min. base pace weekly • Strength Training: Twice weekly Exercise is powerful medicine

FoundMyFitness Clips

195,393 views • 1 year ago

Two years of vigorous exercise reversed the age-related structural changes in the hearts of sedentary 50-year-olds by about 20 years The protocol used by Dr. Ben Levine's team: • Norwegian 4x4 intervals (initially once per week, later increased to twice per week, eventually returning to once/week) • Strength training (twice weekly) • Recovery aerobics (20-30 minutes of light exercise) • Endurance sessions (weekly 1+ hour endurance training, plus a separate 30-min base-pace session) A few notes: • Exercise intensity and frequency gradually increased from the start • By 6 months, participants were exercising 5–6 hours/week

Two years of vigorous exercise reversed the age-related structural changes in the hearts of sedentary 50-year-olds by about 20 years The protocol used by Dr. Ben Levine's team: • Norwegian 4x4 intervals (initially once per week, later increased to twice per week, eventually returning to once/week) • Strength training (twice weekly) • Recovery aerobics (20-30 minutes of light exercise) • Endurance sessions (weekly 1+ hour endurance training, plus a separate 30-min base-pace session) A few notes: • Exercise intensity and frequency gradually increased from the start • By 6 months, participants were exercising 5–6 hours/week

FoundMyFitness Clips

198,486 views • 8 months ago

Rhonda Patrick on how to reverse 20 years of heart aging. cc: Dr. Rhonda Patrick

Rhonda Patrick on how to reverse 20 years of heart aging. cc: Dr. Rhonda Patrick

Tim Ferriss

239,780 views • 11 months ago

I sat down with Dr Rhonda Patrick and she shared this: The Norwegian 4x4 Protocol can reverse heart ageing by 20 years. 4 minutes intense exercise, 4 minutes recovery, repeat 4 times. In 2 years, a 50-year-old heart can look like a 30-year-old’s. Once per week is the minimum dose 👇🏾

I sat down with Dr Rhonda Patrick and she shared this: The Norwegian 4x4 Protocol can reverse heart ageing by 20 years. 4 minutes intense exercise, 4 minutes recovery, repeat 4 times. In 2 years, a 50-year-old heart can look like a 30-year-old’s. Once per week is the minimum dose 👇🏾

Steven Bartlett

267,336 views • 10 months ago

An intense two-year exercise regimen, gradually increasing to 5–6 hours per week, reversed up to 20 years of age-related structural changes and stiffness in the hearts of sedentary 50-year-olds This is the protocol, totaling 5-6 hours per week, that Dr. Benjamin Levine and colleagues utilized: • Norwegian 4x4 interval training (once a week, later increasing to twice a week, and eventually going back to just once weekly) • Light aerobic activity on recovery days (on days following interval training sessions, participants engaged in light exercises lasting 20 to 30 minutes ) • Endurance base building (an hour-long, or longer, endurance session and a 30-minute base pace session each week) • Strength training sessions twice weekly Exercise is indeed medicine

An intense two-year exercise regimen, gradually increasing to 5–6 hours per week, reversed up to 20 years of age-related structural changes and stiffness in the hearts of sedentary 50-year-olds This is the protocol, totaling 5-6 hours per week, that Dr. Benjamin Levine and colleagues utilized: • Norwegian 4x4 interval training (once a week, later increasing to twice a week, and eventually going back to just once weekly) • Light aerobic activity on recovery days (on days following interval training sessions, participants engaged in light exercises lasting 20 to 30 minutes ) • Endurance base building (an hour-long, or longer, endurance session and a 30-minute base pace session each week) • Strength training sessions twice weekly Exercise is indeed medicine

FoundMyFitness Clips

259,458 views • 1 year ago

~40% of people who engage in moderate-intensity exercise (zone 2) for ~2.5 hours/week don't experience VO2 max improvements For the average committed exerciser, the best way to improve your VO2 max is with vigorous-intensity exercise

~40% of people who engage in moderate-intensity exercise (zone 2) for ~2.5 hours/week don't experience VO2 max improvements For the average committed exerciser, the best way to improve your VO2 max is with vigorous-intensity exercise

FoundMyFitness Clips

30,215 views • 2 years ago

New episode on the optimal exercise intensity, duration, and frequency to prevent and reverse heart aging! In this podcast episode, Dr. Benjamin Levine discusses his groundbreaking research, which reveals how three weeks of bed rest can have a more detrimental impact on fitness than 30 years of aging. Dr. Levine details his research findings that show how a structured exercise regimen can reverse up to 20 years of heart aging by improving both shrinkage and compliance, as well as enhancing aspects of vascular age by 15 years. He also discusses how resistance training and aerobic training have profound differences on the heart, what risks are linked to high-intensity exercise, why recovery is key for the heart, how exercise duration and intensity affect coronary calcium levels, what exercise dose increases Afib risk, and so much more. This episode is a must! Available on YouTube, Spotify, X, and everywhere else. Links in comment. Timestamps: 0:00 - Introduction 1:31 - Bed rest vs. 30 years of aging 5:18 - Recovering from bed rest 6:49 - Does exercise protect against long COVID? 11:27 - Bed rest as a model for space flight 12:24 - How bed rest affects heart size 13:52 - Why a brand-new rubber band mimics a lifetime of endurance training 17:23 - The exercise dose that preserves youthful cardiovascular structure 19:32 - Reversing 20 years of heart aging 23:14 - Reversing vascular age by 15 years 28:38 - Why start an exercise regimen in your 70s? 34:26 - High-intensity exercise risks 37:51 - Balancing high- & moderate-intensity training 42:49 - Training for health vs. training for performance 43:57 - Why muscle mass & cardiorespiratory fitness are like retirement funds 45:12 - Make exercise part of your personal hygiene 46:16 - Why VO2 max correlates with longevity 53:43 - Cardiorespiratory fitness & mortality 59:21 - How does change in fitness over time affect mortality? 1:01:34 - Exercise non-responders 1:05:23 - Limiting factors for VO2 max improvements 1:08:20 - How marathon training affects heart size 1:12:34 - Heart adaptations in purely strength-trained vs. endurance athletes 1:18:23 - Why pure strength-trainers should incorporate endurance training 1:22:07 - How strength training affects blood pressure 1:26:41 - How exercise influences cardiac output 1:28:39 - Does CrossFit count as endurance training? 1:31:04 - Exercise for improving blood pressure 1:36:11 - Lifestyle strategies for treating hypertension 1:38:40 - Why recovery is key 1:42:36 - The best indicator of being overtrained 1:43:36 - Estimating training zones 2-5 1:50:00 - Why HRV is a poor recovery indicator 1:55:16 - Why men are faster runners than women 1:58:49 - Can women achieve similar aerobic exercise benefits doing 2x less? 2:00:21 - Possible cardiovascular benefits of HRT in women 2:02:12 - Defining “extreme exercise” 2:04:00 - How exercise volume affects coronary plaque calcification 2:10:50 - How exercise duration & intensity affect coronary calcium levels 2:14:03 - Why high exercise duration & intensity increases Afib risk 2:16:33 - What exercise dose increases Afib risk? 2:17:59 - Managing stroke risk in athletes prone to Afib 2:21:14 - Why you shouldn’t become an endurance athlete to “live longer”

Dr. Rhonda Patrick

266,054 views • 2 years ago

Patrick Bet-David gets blown away when doctor reveals which type of exercise truly cuts your risk of premature death. DR. RHONDA PATRICK: “New data shows that if you’re doing vigorous-intensity exercise… for every one minute you do of that, if you’re wanting to lower all-cause mortality, you have to do four minutes of moderate intensity or an hour and a half of light.” PBD looked confused and stopped her to clarify what he had just heard. DR. PATRICK REITERATED: “So for every one minute of vigorous intensity is four minutes of moderate intensity. You have to do four minutes [of moderate exercise] to get [the same] all-cause mortality [benefits]. Light is an hour and a half.” PBD: “Stop it.” DR. RHONDA PATRICK: “That’s for all-cause mortality. Dying from all non-accidental causes. It gets better.” PBD: “Oh my god.” DR. RHONDA PATRICK: “If you’re wanting to prevent cardiovascular-related mortality, for every one minute of vigorous [exercise], okay, this is cycling, this is jogging, swimming, you have to do eight minutes of moderate intensity [to reap the same benefits]… So eight minutes of that. Or… the one- to two-hour range of light exercise. So that would be just walking around the house basically.”

Patrick Bet-David gets blown away when doctor reveals which type of exercise truly cuts your risk of premature death. DR. RHONDA PATRICK: “New data shows that if you’re doing vigorous-intensity exercise… for every one minute you do of that, if you’re wanting to lower all-cause mortality, you have to do four minutes of moderate intensity or an hour and a half of light.” PBD looked confused and stopped her to clarify what he had just heard. DR. PATRICK REITERATED: “So for every one minute of vigorous intensity is four minutes of moderate intensity. You have to do four minutes [of moderate exercise] to get [the same] all-cause mortality [benefits]. Light is an hour and a half.” PBD: “Stop it.” DR. RHONDA PATRICK: “That’s for all-cause mortality. Dying from all non-accidental causes. It gets better.” PBD: “Oh my god.” DR. RHONDA PATRICK: “If you’re wanting to prevent cardiovascular-related mortality, for every one minute of vigorous [exercise], okay, this is cycling, this is jogging, swimming, you have to do eight minutes of moderate intensity [to reap the same benefits]… So eight minutes of that. Or… the one- to two-hour range of light exercise. So that would be just walking around the house basically.”

The Vigilant Fox 🦊

990,283 views • 4 months ago

New presentation! At the recent A4M LongevityFest conference (American Academy of Anti-Aging Medicine (A4M)) I discussed how omega-3, vitamin D, and magnesium deficiencies accelerate aging, the life expectancy benefits from improving VO2 max, and the anti-cancer effects of vigorous exercise. Available on YouTube, Spotify, X, and everywhere else. Links in comment. Timestamps: 0:00 - Vitamin D, the gene regulator 5:58 - Vitamin D deficiency & mortality risk 9:24 - Optimal vitamin D levels & supplementation 11:10 - Magnesium deficiency & DNA damage 14:50 - Dangers of inadequate omega-3 intake 17:07 - Why you want your omega-3 index in the 8% range 23:17 - Vigorous exercise is the best longevity drug 24:50 - VO2 max & life expectancy 29:36 - VO2 max protocols 32:27 - Measuring VO2 max 33:34 - Reversing 20 years of heart aging 36:31 - Blood pressure benefits of vigorous exercise 37:48 - BDNF benefits of vigorous exercise 40:58 - Vigorous exercise improves focus & attention 42:11 - Exercise protocols for maximizing BDNF 43:13 - Anti-cancer effects of vigorous exercise 45:30 - How to use exercise snacks to break up sedentary time

New presentation! At the recent A4M LongevityFest conference (American Academy of Anti-Aging Medicine (A4M)) I discussed how omega-3, vitamin D, and magnesium deficiencies accelerate aging, the life expectancy benefits from improving VO2 max, and the anti-cancer effects of vigorous exercise. Available on YouTube, Spotify, X, and everywhere else. Links in comment. Timestamps: 0:00 - Vitamin D, the gene regulator 5:58 - Vitamin D deficiency & mortality risk 9:24 - Optimal vitamin D levels & supplementation 11:10 - Magnesium deficiency & DNA damage 14:50 - Dangers of inadequate omega-3 intake 17:07 - Why you want your omega-3 index in the 8% range 23:17 - Vigorous exercise is the best longevity drug 24:50 - VO2 max & life expectancy 29:36 - VO2 max protocols 32:27 - Measuring VO2 max 33:34 - Reversing 20 years of heart aging 36:31 - Blood pressure benefits of vigorous exercise 37:48 - BDNF benefits of vigorous exercise 40:58 - Vigorous exercise improves focus & attention 42:11 - Exercise protocols for maximizing BDNF 43:13 - Anti-cancer effects of vigorous exercise 45:30 - How to use exercise snacks to break up sedentary time

Dr. Rhonda Patrick

105,960 views • 2 years ago

Dr. Rhonda Patrick is a leading researcher in nutrition, aging, and metabolic health. She’s known for translating complex science into practical tools for longevity and performance — and now, after a year of doing CrossFit, she has new insights to share. In this episode, Rhonda joins Denise to break down the cellular mechanisms behind high-intensity exercise, why lactate is more than a waste product, and how CrossFit helps train your brain, not just your body. 🎙️ “Dr. Rhonda Patrick on High-Intensity Exercise and Health (EP.017)” — Check it out wherever you listen! (Apple, Spotify, YouTube, and more.) Links below.

Dr. Rhonda Patrick is a leading researcher in nutrition, aging, and metabolic health. She’s known for translating complex science into practical tools for longevity and performance — and now, after a year of doing CrossFit, she has new insights to share. In this episode, Rhonda joins Denise to break down the cellular mechanisms behind high-intensity exercise, why lactate is more than a waste product, and how CrossFit helps train your brain, not just your body. 🎙️ “Dr. Rhonda Patrick on High-Intensity Exercise and Health (EP.017)” — Check it out wherever you listen! (Apple, Spotify, YouTube, and more.) Links below.

CrossFit

115,601 views • 1 year ago

Exercise can lower your blood pressure as effectively as medication A meta-analysis of randomized controlled trials found that 20-60 minutes of moderate to vigorous activity, 3-4 days a week, over just 6 weeks, can yield antihypertensive effects comparable to drugs The key is effort and consistency—no shortcuts here And if you’re willing to put in the work, the benefits of exercise go far beyond just lowering your blood pressure

Exercise can lower your blood pressure as effectively as medication A meta-analysis of randomized controlled trials found that 20-60 minutes of moderate to vigorous activity, 3-4 days a week, over just 6 weeks, can yield antihypertensive effects comparable to drugs The key is effort and consistency—no shortcuts here And if you’re willing to put in the work, the benefits of exercise go far beyond just lowering your blood pressure

FoundMyFitness Clips

33,856 views • 1 year ago

Exercise doesn’t just slow brain aging, it can reverse it In a year-long trial, older adults who did aerobic exercise (~65–70% max heart rate, 3x/week for 30 minutes) increased hippocampal volume by about 2%, instead of the usual 1–2% yearly shrinkage This net gain reflects neurogenesis driven in part by higher BDNF, a key protein that supports the growth and survival of new neurons The same group also showed improvements in learning and memory, underscoring how powerful regular physical activity is for the aging brain

Exercise doesn’t just slow brain aging, it can reverse it In a year-long trial, older adults who did aerobic exercise (~65–70% max heart rate, 3x/week for 30 minutes) increased hippocampal volume by about 2%, instead of the usual 1–2% yearly shrinkage This net gain reflects neurogenesis driven in part by higher BDNF, a key protein that supports the growth and survival of new neurons The same group also showed improvements in learning and memory, underscoring how powerful regular physical activity is for the aging brain

FoundMyFitness Clips

35,490 views • 6 months ago

Just 1 minute of vigorous exercise is equivalent to 4 minutes of moderate activity (or 53 minutes of walking) for lowering all-cause mortality, according to a recent Biobank study For cardiovascular mortality, the difference was even larger 1 minute of vigorous exercise equates to 8 minutes of moderate-intensity exercise, or 73 minutes of walking It just goes to show... Vigorous-intensity physical activity is the best type of exercise you can do—across the board

Just 1 minute of vigorous exercise is equivalent to 4 minutes of moderate activity (or 53 minutes of walking) for lowering all-cause mortality, according to a recent Biobank study For cardiovascular mortality, the difference was even larger 1 minute of vigorous exercise equates to 8 minutes of moderate-intensity exercise, or 73 minutes of walking It just goes to show... Vigorous-intensity physical activity is the best type of exercise you can do—across the board

FoundMyFitness Clips

172,156 views • 8 months ago

The current physical activity guidelines undervalue vigorous activity. Vigorous activity may be 4–9× more potent than moderate activity for reducing all-cause mortality, cardiovascular disease, diabetes, and cancer risk. The exercise guidelines assume a 2:1 ratio between moderate- and vigorous-intensity activity: two minutes of moderate activity equals one minute of vigorous. That's why the recommendations are 150–300 minutes of moderate or 75–150 minutes of vigorous activity each week. But new data suggest that ratio is wrong. In this brand-new journal-club episode, Brady Holmer (Brady Holmer) and I unpack a groundbreaking study that should change how we think about activity for disease prevention. The research identified that 1 minute of vigorous activity is roughly equivalent to 4–9 minutes of moderate activity, and 53–94 minutes of light activity, for disease risk reduction. It also shows a clear dose-response for vigorous activity that’s much weaker for moderate activity and barely detectable for light activity. We also do a deep dive into why vigorous activity is so powerful, the underlying mechanisms, and discuss practical takeaways, including how even very brief bouts of vigorous movement (think “exercise snacks”) can produce meaningful health benefits. Timestamps are below. You can find links to the episode on YouTube, Apple Podcasts, and Spotify in the next post. Enjoy! Timestamps: 0:00 - Introduction 2:14 - The 1:2 rule for exercise 6:28 - What counts as vigorous? 8:48 - Where exercise guidelines fail 9:32 - Inside the wearable-based study design 15:24 - Vigorous activity—easier than you think? 18:01 - Avoiding healthy user bias 19:12 - A better way to measure exercise 20:58 - Is vigorous 4–10x better? 25:08 - One vigorous min vs. one-hour walk 27:15 - Are light activity's benefits capped? 29:03 - Is vigorous 5x better for your heart? 30:12 - Does zone 2 count as vigorous? 31:24 - Dose-response comparison 32:35 - Vigorous exercise & younger arteries 38:29 - Why aging hearts need intensity 41:22 - Can intensity preserve VO₂ max? 42:40 - Moderate exercise & VO₂ max limits 44:34 - Is vigorous 10x better for diabetes? 51:01 - Why intensity boosts mitochondria 56:11 - Does intense exercise kill tumor cells? 1:02:28 - Hormonal benefits 1:03:19 - Preventing falls with intensity 1:07:49 - Fighting inflammation 1:09:42 - High-intensity training & brain aging 1:11:14 - The 2:1 ratio is out the door 1:13:03 - Could vigorous exercise become a pill? 1:14:21 - Short bursts for longer life 1:18:28 - Can short bouts match full workouts? 1:22:39 - Do wearables undervalue vigorous bursts? 1:25:19 - Can micro-workouts replace the gym? 1:30:23 - Updating exercise guidelines 1:41:48 - Is light activity useless? 1:44:17 - Is vigorous exercise safe for seniors? 1:48:41 - Is HIIT harmful to female hormones? 1:54:18 - Balancing intensity & recovery (80/20 rule) 1:56:43 - Brady’s exercise routine 2:00:30 - Vigorous activity & kids’ brainpower 2:03:27 - Are we undervaluing vigorous exercise? 2:05:16 - Why chasing steps doesn't work

Dr. Rhonda Patrick

305,962 views • 7 months ago