Does evening screen use hurt athletes' sleep and performance? Five nights of pre-bed smartphone use worsened sleep, reaction time and jumping in elite players
Oct 27
3 min read
Athletes are told to protect their sleep, and the evening screen is usually the first suspect. Phones and tablets emit short-wavelength light that can suppress melatonin, and they keep the brain engaged when it should be winding down. But many athletes use devices before bed. How much does evening screen use actually cost, does it reach performance the next day, and does blocking the light help?
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