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Rapamycin extends mouse lifespan 9–14%
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Walking 10 min after meals blunts glucose
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234 ‒ Chris Hemsworth on Limitless, longevity, and happiness — Whalespan

Content›Video›234 ‒ Chris Hemsworth on Lim…

234 ‒ Chris Hemsworth on Limitless, longevity, and happiness

Peter Attia1h 16m · 2022-12-12

Claims Made

106

Claims Supported

75

Support Rate

71%

Support rate

75 of 106 claims supported

75 supported31 partial / not

Claims from this content

47

✓Well SupportedThe APOE4 genotype is the major genetic risk factor for Alzheimer's disease, with risk increasing in a dose-dependent manner.✓Well SupportedSauna use, often after a workout, provides psychological and sleep benefits, with a noticeable difference in sleep quality compared to days without sauna use.✓Well SupportedFor longevity, the primary focus in training should be on preserving absolute force and power, which are primarily affected by fast-twitch fiber atrophy.✓Well SupportedApoE4 genotyping identifies Alzheimer's risk but does not negate the need for preventative measures.Well Supported

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A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

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N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

✓

Having two copies of the APOE4 gene variant likely means a person will develop advanced Alzheimer's disease.

✓Well SupportedHot baths were found to be more effective than three 10-minute sessions in a 176°F sauna or 45 minutes in a far-infrared sauna for cardiovascular benefits.

◐Partially SupportedThe APOE4 allele increases Alzheimer's disease risk, while APOE2 appears to decrease it.

✓Well SupportedCold water exposure is a potent stimulus for shifting the brain and body's environment, leading to improved well-being for a substantial period afterward.

◐Partially SupportedCold water immersion in 36°F (2°C) ocean water for four and a half minutes, while moving and with head submerged, is more challenging than an ice bath.

✕Not SupportedKnowing one's APOE genotype allows for proactive planning.

◐Partially SupportedChris Hemsworth's training has become more specific, moving away from simply lifting heavy weights multiple times.

✓Well SupportedLabeling physiological responses to adrenaline as 'excitement' rather than 'fear' can lead to improved performance.

✓Well SupportedFasting for 3 to 4 days can induce a systemic reboot by changing how the body interacts with nutrient absence.

◐Partially SupportedThe intense drive and self-motivation that facilitated early career success is a 'blessing and a curse' and is difficult to switch off once activated.

✓Well SupportedCold water immersion can provide benefits for inflammation repair and general mood.

◐Partially SupportedTo maximize performance in activities like rope climbing, it is beneficial to be strong but not heavy.

◐Partially SupportedGrip strength and cardiorespiratory fitness are top metrics for assessing fitness and longevity.

◐Partially SupportedThe reptilian part of the brain can perceive an immediate threat to life even when the upper brain knows it is not in danger, leading to a strong physiological response.

◐Partially SupportedOvercoming significant challenges, such as cold water swims, can lead to profound elation and calm.

◐Partially SupportedConsistent engagement with specific challenges, when integrated into a daily routine, can yield exponential benefits.

◐Partially SupportedA restless mind can disrupt sleep and prevent returning to sleep.

◐Partially SupportedChris Hemsworth's philosophy for a better life involves changing one's attitude and being more curated with choices.

◐Partially SupportedEngaging and making good use of as many of the body's over 600 muscles as possible is important for longevity.

◐Partially SupportedHaving two copies of the APOE4 gene increases Alzheimer's disease risk.

◐Partially SupportedThe APOE4/4 genotype is present in approximately 1% of the population.

◐Partially SupportedReducing stress, mindfulness, specific training, nutrition, and sleep habits can significantly improve overall health and longevity.

◐Partially SupportedThe body adapts to significant muscle gain, allowing for a switch in training focus.

◐Partially SupportedChris Hemsworth has always been able to grow muscle easily as soon as he started incorporating resistance training.

◐Partially SupportedTraining with explosive energy activation and slow negatives has led to more significant gains for Chris Hemsworth compared to previous methods.

◐Partially SupportedIrrational thoughts and stress significantly affect sleep quality.

◐Partially SupportedLifting heavy weights is crucial for activating fast-twitch muscle fibers, and individuals should start early and continue lifting weights throughout their lives.

◐Partially SupportedChris Hemsworth has a genetic predisposition for fast-twitch muscle fibers contributing to his muscularity, strength, and explosiveness.

◐Partially SupportedWaking up achy can be alleviated by sauna and ice bath use, leading to feeling 50-60% better.

◐Partially SupportedA home setup with a sauna and ice bath is considered a highly valuable investment for recovery and well-being.

◐Partially SupportedTo prepare for an event after gaining size, Chris Hemsworth stopped lifting weights for two weeks, focused on rope pulls and sled pulls, and dramatically reduced calorie intake, losing a couple of kilograms.

◐Partially SupportedDuring a first-time 4-day fast, individuals will likely experience sluggishness, emotional irritability, grumpiness, and grouchiness.

◐Partially SupportedFasting for four days can lead to ketosis by day two or three, with potential for increased sharpness and alertness by day four.

◐Partially SupportedThe human species historically endured prolonged periods without food, possessing the ability to hunt during starvation.

◐Partially SupportedA 3-day fast is generally considered the maximum duration for a first-time fast.

◐Partially SupportedWorkout methods can emphasize explosive sympathetic nervous system activation followed by slow negatives.

◐Partially SupportedDuring a 100-foot rope climb, the primary physical strain was experienced in the quadriceps, followed by biceps and forearms.

◐Partially SupportedExtremely cold water (36°F / 2°C) can feel like being on fire or boiling oil and causes breathlessness.

◐Partially SupportedA 100-foot rope climb required grit and willpower rather than just trained preparedness.

◐Partially SupportedExperiencing extreme pain, dizziness, and nausea during a cold water swim, with arms and legs feeling like lead, indicates a significant physiological challenge.

◐Partially SupportedChris Hemsworth's fingers locked and could not extend after strenuous activity, indicating extreme muscle fatigue.

◐Partially SupportedChris Hemsworth experienced significant quad burn during a 100-foot descent.

◐Partially SupportedChris Hemsworth experienced a significant ankle injury while training for a rope climb.