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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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How Modern Shoes Disrupt Natural Foot Function | Courtney Conley, D.C. — Whalespan

Content›Video›How Modern Shoes Disrupt Nat…

How Modern Shoes Disrupt Natural Foot Function | Courtney Conley, D.C.

Peter Attia2m · 2025-07-29

Claims Made

10

Claims Supported

8

Support Rate

80%

Support rate

8 of 10 claims supported

8 supported2 partial / not

Claims from this content

9

◐Partially SupportedWearing shoes with excessive cushioning can mask foot pain signals, leading to overstriding and heavy landings.◐Partially SupportedThe human calcaneus is designed for shock absorption, and heel receptors signal to reduce landing impact.◐Partially SupportedFunctional footwear should have a zero drop, meaning the heel and toe are on the same plane, mimicking natural human design.◐Partially SupportedStrong feet and extrinsic muscles are necessary to control pronation when using shoes with higher stack height.Partially Supported

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

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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.

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N. Park

2d

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

◐

A wide toe box can be assessed by placing the foot on the shoe's insert and verifying that toes can still be seen splayed when weight is applied.

◐Partially SupportedExcessive cushioning in footwear can alter the rate of loading and speed up pronation.

◐Partially SupportedWalking should involve a grazing of the heel, feeling the impact when the heel strikes the ground.

◐Partially SupportedFeeling the ground through proprioception provides valuable information during walking.

◐Partially SupportedPain from a correctly fitted shoe may indicate an error in the wearer's movement or technique.