The 8 Hours of Sleep Myth for Longevity and Muscle Building After 40

Wits & Weights | Strength & Fat Loss Over 40 · Sep 24, 2026 · 23m · transcript

Do you actually need 8 hours of sleep to build muscle after 40?

We put that claim under the microscope and separate what sleep research actually shows from what fitness culture spreads online.

Learn about the simple rules that protect your strength training, fat loss, and daily energy even when your night falls a bit short:

Where the 7+ hours of sleep guideline comes from and what it does and does not cover

The effect of sleep restriction on a calorie deficit, including fat loss vs fat-free (lean / muscle) mass loss

Why “short sleep kills your gains” is not supported by direct lifting trials…