
Sleep by Night, Move by Day: The Hidden Habits That Predict Longevity
New research links midlife behaviours to lifespan across species: longer-lived fish slept at night and stayed more active in daylight, while human studies suggest daytime activity and sleep timing predict lower mortality and a staged ageing process. The findings imply behaviour is a sensitive readout of ageing, with wearables offering a path to map ageing trajectories in people.

