Dose-response relationship between evening exercise and sleep
Leota, Presby, Le, Czeisler, Mascaro, Capodilupo, Wiley, Drummond, Rajaratnam, Facer-Childs · 2025 · Nature Communications 16(1):3297
What this work gives Aellic
14,689 physically active people wearing a commercial wrist device for one year, 4,084,354 person-nights: later exercise timing and higher exercise strain were associated with delayed sleep onset, shorter sleep duration, lower sleep quality, higher nocturnal resting heart rate and lower nocturnal heart rate variability. Regardless of strain, exercise ending 4 hours or more before sleep onset was not associated with changes in sleep. Observational, in an active sample; it supports a distance to sleep onset, not a fixed clock time, and its abstract reports nothing on deep sleep.
Where this sits in the engine
This work is on the register, but nothing computes with it today, mostly because the feature it belongs to has not been built yet. It is listed so the numbers on the overview do not claim more than they carry.