8 place 49

87 A 47-year study reveals when fitness and strength start to fade

ScienceDaily
ScienceDaily · 01/18/2026 03:01 EDT

A long-running Swedish study has followed adults for nearly five decades, uncovering when physical decline truly begins. Fitness and strength start slipping around age 35, then worsen gradually with age. The encouraging twist: adults who began exercising later still improved their physical capacity by up to 10 percent. It’s a powerful reminder that staying active matters, even if you start late.

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