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Weekly · Sunday Morning

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Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

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Supercharge Exercise Performance & Recovery with Cooling — Whalespan

Content›Video›Supercharge Exercise Perform…

Supercharge Exercise Performance & Recovery with Cooling

Andrew Huberman1h 24m · 2021-05-10

Claims Made

146

Claims Supported

111

Support Rate

76%

Support rate

111 of 146 claims supported

111 supported35 partial / not

Claims from this content

109

✓Well SupportedInside Tracker's platform provides actionable protocols to adjust blood markers into ideal ranges for health.✓Well SupportedRegular blood work is essential for monitoring factors impacting immediate and long-term health.✓Well SupportedHelix Sleep mattresses and pillows are tailored to individual sleep needs assessed through a quiz.✓Well SupportedThorne supplements are considered highly stringent regarding ingredient precision and quality.✓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.

Inside Tracker analyzes blood and DNA data to provide personalized nutrition, supplementation, and lifestyle recommendations for optimizing health markers.

✓Well SupportedThe Helix Dusk Mattress is reported to improve sleep depth, duration, and quality.

✓Well SupportedCooling specific body parts like the palms, soles of the feet, or face is a better recovery strategy after endurance training than full body cold water immersion.

✓Well SupportedA drop in body temperature approximately two hours before natural wake-up time is a physiological marker that can be shifted.

✓Well SupportedPlacing cold packs on the face, palms, and soles results in double the cooling rate compared to the axilla, groin, or neck.

✓Well SupportedReducing core body temperature through palmar cooling can improve exercise performance.

✓Well SupportedCooling the upper face, palms, and soles of the feet aids rapid heat dissipation.

✓Well SupportedCooling hands, feet, or face can significantly increase work output, with one study showing 600 pull-ups in cooled individuals.

✓Well SupportedShort cold exposure (20 seconds at 39°F) can cause quickened breath and adrenaline release.

✓Well SupportedSpiking adrenaline safely is compatible with other learning and memory enhancement protocols like sleep.

✓Well SupportedThe Theragun can relieve soreness and deep muscle tension accumulated from physical work, exercise, or prolonged sitting.

✓Well SupportedCooling interventions can increase the amount of work or number of repetitions with the same weight during strength training, sometimes requiring an increase in sets.

✓Well SupportedExposure to extreme heat triggers the production of heat shock proteins, which initiate metabolic and biological cascades.

✓Well SupportedInsideTracker's 'inner age' test compares biological age to chronological age, which is important for predicted lifespan.

✓Well SupportedTemperature is a powerful variable for improving physical performance, skill learning, and recovery.

✓Well SupportedCaffeine intake before training can provide general alertness and performance-enhancing effects, though habituation may reduce benefits.

✓Well SupportedMuscle heating disrupts enzymes, including pyruvate kinase, leading to reduced muscle contraction performance.

✕Not SupportedUsing cold exposure for recovery during high training load can dampen mTOR and hypertrophic signaling.

✕Not SupportedNon-steroidal anti-inflammatory drugs (NSAIDs) taken within four hours before or after exercise can hinder endurance, strength, and muscle size gains.

◐Partially SupportedIncreasing environmental temperature during exercise leads to earlier quitting due to cardiac drift.

✓Well SupportedConsuming caffeine primarily before hard workouts and less on easy days can help manipulate training intensity and promote slower paces on recovery days.

◐Partially SupportedHigher body temperature reduces willpower and the ability to exert effort.

◐Partially SupportedMaintaining muscle temperature within a proper range allows for greater work output.

✕Not SupportedCooling the core body temperature with an ice bath is less effective for cooling the body on a hot day than cooling the palms, bottoms of the feet, and face.

◐Partially SupportedSubjects using palmar cooling were able to perform approximately 180 pull-ups in a fixed timeframe, nearly doubling performance compared to no cooling.

◐Partially SupportedCooling interventions can significantly increase exercise output and have been adopted by professional teams and the military.

◐Partially SupportedCooling the palms of the hands can significantly increase running distance, lifting capacity, and repetitions performed.

◐Partially SupportedHeat exposure can stimulate growth hormone production, aiding tissue repair, fat burning, and metabolism.

✕Not SupportedNon-regular caffeine users should not view caffeine as a performance-enhancing tool before training.

✓Well SupportedUsing a cooling glove or holding cold packs in hands can help lower core temperature and potentially increase endurance.

◐Partially SupportedCold exposure can be used to increase thermogenesis and fat loss, or for stress mitigation and mood, depending on the approach.

◐Partially SupportedCold exposure is argued to be more powerful than heat exposure as a tool for performance and recovery.

✕Not SupportedIndividuals sensitive to caffeine should abstain from it due to potential side effects like jitters, anxiety, sweating, or heart palpitations.

◐Partially SupportedSite-specific cooling, excluding ice baths or showers, can amplify endurance and strength by 200-600% and improve recovery.

◐Partially SupportedWarming extremities and face can transfer heat into or out of the body.

◐Partially SupportedOverheating limits exercise performance by reducing ATP function and muscle contraction.

◐Partially SupportedThe face, palms of the hands, and bottoms of the feet dissipate and absorb heat due to arterio-venous anastomoses (AVAs).

✕Not SupportedCold baths, ice baths, and cold showers may block training stimulus by reducing inflammation.

✕Not SupportedOverheating (hyperthermia) is detrimental to physical performance and all tissue health, including causing neuron death in the brain.

◐Partially SupportedArteriovenous anastomoses (AVAs) are special blood vessels connecting arteries and veins with a previously unknown function.

◐Partially SupportedHigh body temperature impairs enzyme function, disrupting cellular processes.

✓Well SupportedThe thermic effect of food is a minor contributor to body temperature and is unlikely to be a concern for eating before training.

✕Not SupportedStimulants like Adderall or high doses of coffee can be counterproductive for learning and performance.

◐Partially SupportedCooling specific body compartments can triple performance and maintain it even without the cooling approach, suggesting a conditioning effect.

◐Partially SupportedThe face, palms of the hands, and soles of the feet are effective areas for the body to dissipate heat and absorb cool.

◐Partially SupportedExternal cooling techniques can be applied moment-to-moment during exercise sets to optimize performance, offering a flexible, zero-cost method.

◐Partially SupportedCooling the hands and feet increased the number of cold dips performable in a session by 60%.

◐Partially SupportedCooling the brain can be achieved by pouring water on the head, as cool blood from the facial region can circulate and cool the brain.

◐Partially SupportedAchieving resting body temperature sooner after a workout facilitates faster muscle and tendon recovery.

◐Partially SupportedModern DNA tests can provide additional layers of information to support understanding of internal bodily processes.

◐Partially SupportedCold immersion stimulates vasoconstriction, which can temporarily reduce the body's ability to dissipate heat by limiting blood flow to the skin.

◐Partially SupportedMaintaining a cool body temperature allows individuals to exert themselves further and with greater willingness.

◐Partially SupportedApplying cold to the body at the appropriate times can improve performance and endurance.

✕Not SupportedHypothermia is dangerous and the body actively tries to avoid it.

◐Partially SupportedCooling the core, the back of the neck, or the top of the head is used for short-term recovery in combat sports between rounds or during halftime.

◐Partially SupportedIce packs delivered to the face can be used by high-output individuals to dump heat quickly, but should not be kept on long enough to cause vasoconstriction.

✕Not SupportedClenbuterol increases body temperature and fat loss but carries a severe danger of hyperthermia.

✕Not SupportedConsuming stimulants like high doses of caffeine or ephedrine before exercise can impair performance by increasing body temperature.

◐Partially SupportedEnzymes, which are proteins, can lose function when their specific structure is modified by heat.

◐Partially SupportedTheragun offers a 30-day trial period, with devices starting at $199.

◐Partially SupportedGoosebumps (piloerection) are an ancient physiological response to cold, where tiny neurons mechanically lift hair follicles to trap air and create insulation.

✕Not SupportedExtreme cooling (becoming cryogenic) or excessive warming can be dangerous.

◐Partially SupportedOn hot days, hairs lying down allow more heat to dissipate through the skin, aiding in heat dumping.

◐Partially SupportedThe body uses piloerection to trap air for insulation and heat conservation.

✕Not SupportedDrugs that impair body temperature perception, such as MDMA, can lead to dangerous behaviors that prevent cooling.

◐Partially SupportedMaintaining body temperature within a specific range is crucial for enzyme function, cellular energy, digestion, and cognition.

◐Partially SupportedUnderstanding mechanisms allows individuals to tweak, modify, and adjust timing and dosage of tools and protocols for optimal benefit.

✕Not SupportedSubmerging the entire body in an ice bath or taking a cold shower up to the neck or chest is an inefficient way to cool the body quickly because it can cause vasoconstriction.

◐Partially SupportedThe body has more flexibility in tolerating cold temperatures than excessive heat.

◐Partially SupportedSweating is less effective at cooling the body on humid days because the high moisture content in the air inhibits sweat evaporation.

◐Partially SupportedOn a hot day, goosebumps are absent, allowing hairs to lie flat to facilitate heat dissipation.

◐Partially SupportedThe body regulates temperature through core organs, periphery, and specific heat-exchange areas.

◐Partially SupportedDeaths in professional combat sports may be as attributable to dehydration and overheating as to head trauma.

◐Partially SupportedSpecific tools and practices can improve endurance and strength by three to four times current capacity.

◐Partially SupportedCooler environments allow for steady state exercise output and heart rate, while warmer environments cause earlier cessation of exercise.

◐Partially SupportedThe information covered in this series benefits recreational exercisers, beginners, and those focused on fat loss or muscle building.

◐Partially SupportedOverheating can lead to a physiological mechanism that causes individuals to stop physical exertion, and in extreme cases, can result in blacking out or death.

◐Partially SupportedIngesting substances that increase body temperature after exercise will impede recovery, while lowering body temperature in safe ranges will accelerate it.

◐Partially SupportedIn a bench press study, a cooling group significantly outperformed a control group that was taking testosterone cypionate.

◐Partially SupportedHeating the palms of the hands and soles of the feet can warm the core body temperature and insulate against heat loss.

◐Partially SupportedNSAIDs like Tylenol, Advil, and Naproxen can lower body temperature and are sometimes used by endurance athletes to reduce core temperature during exertion.

◐Partially SupportedCaffeine intake of 100-400mg per day should be consumed before exercise, not after, to aid thermal regulation.

◐Partially SupportedWarming the face is important for individuals who get cold in cooler weather.

◐Partially SupportedProper cooling techniques can significantly improve physical performance.

◐Partially SupportedBlood vessel radius is proportional to the fourth power of flow capacity.

✕Not SupportedUsing thermogenic compounds to increase body temperature for fat burning may hinder exercise performance and is detrimental for body recomposition goals.

◐Partially SupportedThe body has evolved numerous mechanisms to maintain a narrow range of core temperature, as deviations are detrimental.

◐Partially SupportedAlcohol acts as a vasodilator, which can help lower body temperature and potentially aid recovery after exercise, provided there are no issues with alcohol intake or age restrictions.

◐Partially SupportedCooling the hands enables individuals to perform further and faster for longer durations and protects against hyperthermia.

✕Not SupportedDietary supplements containing stimulants like ephedrine and Clenbuterol have been linked to deaths in athletes due to hyperthermia.

◐Partially SupportedCold water swimming without wetsuits can lead to temporary rigidity and loss of fine motor control.

◐Partially SupportedCooling interventions allow for real-time adjustment and experimentation to find optimal protocols, unlike supplements.

◐Partially SupportedAvoiding caffeine for three weeks can lead to severe headaches and motivation issues due to withdrawal.

◐Partially SupportedCaffeine, non-steroidal anti-inflammatories (NSAIDs), and alcohol can impact body temperature.

◐Partially SupportedMaintaining body temperature within a proper range allows for greater work output, including lifting more weight, doing more sets/reps, and running further.

◐Partially SupportedCooling specific body compartments can triple performance in dips within a week.

◐Partially SupportedCore mechanisms of temperature regulation and physiology are well-studied, concrete, and actionable.

◐Partially SupportedWhen the body heats up, blood vessels dilate, increasing blood flow to the periphery and throughout the body, and the body perspires to dump heat.

◐Partially SupportedTheragun can be used for relieving soreness and muscle tension.

◐Partially SupportedHyperthermia can cause disorientation and impaired performance.

◐Partially SupportedTheragun allows for quiet, anytime, anywhere deep tissue massage.

◐Partially SupportedFoundational elements for physical performance include adequate sleep, proper hydration, and good nutrition.

✕Not SupportedThe body's self-preservation mechanism to stop exercising when overheating can sometimes activate too late, leading to death.

✕Not SupportedOverheating is detrimental to performance and can be fatal.

✕Not SupportedIncreasing body temperature prior to working out is counterproductive for performance.