Audit a URL →

Sign in Sign up free

Loading…

Weekly · Sunday Morning

Five longevity claims.
Worth your time.
Every Sunday.

Last Sunday

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

5 audits·1 verdict change·0 affiliate links·Every Sunday

Joining 1,247 readers — founders, MDs, and longevity-obsessed people who fact-check their own health decisions.

Browse

Decisions Claims Content Creators

Product

Audit a URL Sunday roundup API (soon)Pricing

About

FAQ Methodology Editorial Standards Corrections Press & brand RSS feed

Legal

Terms of Service Privacy Policy DMCA

Finally, something serious in this space.
Because we actually read the papers.

© 2026 Whalespan. Independent, evidence-graded longevity.

Why My Body is 5° Colder Than Normal — Whalespan

Content›Video›Why My Body is 5° Colder Tha…

Why My Body is 5° Colder Than Normal

Bryan Johnson3m · 2024-12-30

Claims Made

14

Claims Supported

6

Support Rate

43%

Support rate

6 of 14 claims supported

6 supported8 partial / not

Claims from this content

10

◐Partially SupportedBryan Johnson eats within a 6-hour window, fasts for 18 hours daily, exercises for 1 hour daily, and prioritizes over 8 hours of sleep per night.◐Partially SupportedAs we age, the brain reduces energy supply to organs, including muscles and itself, leading to fatigue, muscle wasting, and cognitive decline.◐Partially SupportedBryan Johnson consumes 2,250 calories daily, which is 10% less than the recommended 2,500 calories for his age and activity level, as part of a caloric restriction diet.✓Well SupportedAvoiding smoking, alcohol, vaping, junk food, and processed foods is as important for health as adopting positive practices.Partially Supported

More from Bryan Johnson

Bryan Johnson's Blueprint Rapamycin Protocol

Discussion

Native comments, Twitter mentions, and Reddit threads about this content — surfaced together so the conversation isn't fragmented across platforms.

M

Share your read of this content…

Posting publicly as you · linked to your social profiles

Sort by:

AV

A. Volkovreader

4h

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

NP

N. Park

2d

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

◐

Measuring and using data is the most important aspect of health for guiding decision-making.

◐Partially SupportedBryan Johnson manages stress through breathing exercises, meditation, and social connections.

◐Partially SupportedLower body temperature and metabolic load may contribute to improved longevity.

◐Partially SupportedThe body adjusts to lower caloric intake with high activity levels by lowering its metabolic burden.

◐Partially SupportedInterventions are needed to counteract the decline in energy supply to organs and the brain to protect metabolic health during aging.

◐Partially SupportedBryan Johnson follows a low-inflammation diet of berries, nuts, seeds, and extra virgin olive oil, which results in barely detectable inflammation markers.