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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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How Heat Therapy Improves Slow Wave Sleep — Whalespan

Content›Video›How Heat Therapy Improves Sl…

How Heat Therapy Improves Slow Wave Sleep

Rhonda Patrick16m · 2023-05-30

Claims Made

35

Claims Supported

34

Support Rate

97%

Support rate

34 of 35 claims supported

34 supported1 partial / not

Claims from this content

23

✓Well SupportedA sauna protocol of 20 minutes followed by 30 minutes of cooling, repeated for three consecutive days, can lead to a 16-fold increase in growth hormone release.✓Well SupportedThe increase in growth hormone from sauna use is likely due to increased activity of hypothalamic neurons that regulate heat and stimulate growth hormone release.✓Well SupportedCaffeine blocks adenosine receptors, which build sleep pressure, leading to a 'caffeine crash' when receptors are flooded.✓Well SupportedAccumulation of adenosine in the brain is associated with increased sleep pressure, causing drowsiness and promoting the transition from wakefulness to sleep.Well Supported

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Rhonda Patrick on Sauna Use

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A. Volkovreader

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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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✓

Taking a sauna or hot shower late at night can lead to a compensatory decrease in body temperature, which can improve sleep, provided adequate hydration is maintained.

✓Well SupportedGrowth hormone secretion diminishes starting in the early 30s and is normally released during slow-wave sleep, particularly in the early part of the night.

✓Well SupportedHot baths, hot showers, or saunas before sleep can accelerate the body's cooling process, leading to easier sleep onset.

✓Well SupportedWomen using a 20-minute dry sauna twice a week showed a 510% increase in prolactin levels after each session.

✓Well SupportedA sauna protocol of 20 minutes in a sauna at least 176°F (80°C) one to two hours before bed may promote slow-wave sleep.

✓Well SupportedStrenuous exercise should be performed at least four to six hours before bed, with light activity recommended if exercising within that four-hour window.

✓Well SupportedHeating the body via exercise stimulates ATP release, which breaks down into adenosine, promoting sleepiness and facilitating the transition from wakefulness to sleep.

✕Not SupportedExercising too close to bedtime can impair sleep.

✓Well SupportedExercise combined with body cooling, and warm baths combined with body cooling, may help promote slow-wave activity and deep sleep.

◐Partially SupportedTaking a warm bath before sleep increases the proportion of slow wave sleep, which is important for staving off neurodegenerative diseases like Alzheimer's.

◐Partially SupportedProlactin is involved in sleep regulation and may promote slow-wave sleep.

◐Partially SupportedThe effect of heat stress on growth hormone levels is dose-dependent, influenced by temperature and duration.

◐Partially SupportedGrowth hormone and prolactin are key hormones involved in regulating slow-wave sleep.

◐Partially SupportedPassive body heating is a potentially useful addition to good sleep hygiene.

◐Partially SupportedExercise stimulates the production of somnogenic cytokines like TNF alpha and IL-1, which promote sleep.

◐Partially SupportedPassive body heating can help elderly individuals with sleep disturbances.

◐Partially SupportedSleep disturbances like insomnia may occur in conditions of prolactin deficiency.

◐Partially SupportedExercise and sexual activity can increase growth hormone and prolactin levels.

◐Partially SupportedWhole body hypothermia can increase the production of somnogenic cytokines, promoting non-REM sleep.