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.

How much time should a person spend exercising? — Whalespan

Content›Video›How much time should a perso…

How much time should a person spend exercising?

Peter Attia7m · 2024-05-04

Claims Made

10

Claims Supported

9

Support Rate

90%

Support rate

9 of 10 claims supported

9 supported1 partial / not

Claims from this content

9

✓Well SupportedHigh VO2 max, muscle mass, and strength are superior predictors of lifespan compared to cholesterol, blood pressure, blood glucose, and smoking.✓Well SupportedA good target for training intensity is 'reps in reserve' of minus two, meaning stopping the set when two repetitions away from failure.✓Well SupportedExercising less than an hour a day may require greater focus and specificity to achieve desired outcomes.◐Partially SupportedExceptional exercise results are possible with focused 30-minute sessions 3.5 hours per week, provided intensity and specificity are high.Partially Supported

More from Peter Attia

Peter Attia on Zone 2 Cardio

Peter Attia on Rapamycin (with Matt Kaeberlein)

Attia walks back the clinic protocol: too aggressive for healthy adults

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.

◐

Performing high-intensity interval training immediately after Zone 2 training does not blunt the benefits of Zone 2 training.

◐Partially SupportedA VO2 max of 50 ml/kg/min in a 50-year-old individual indicates significant aerobic training and is a strong predictor of longevity.

◐Partially SupportedObjective output data, such as hard metrics, are the best predictors of lifespan and healthspan.

◐Partially SupportedEffective strength training involves lifting with 1-2 reps in reserve per set, and effective aerobic training includes true Zone 2 and Zone 5 intensity.

✕Not SupportedSubjective self-reported exercise data is unreliable and leads to an apparent negligible benefit beyond 30 minutes of exercise 3-5 times per week.