Some enter the league with a better understanding of sleep science than others. While at Stanford, Landry Fields, the Knicks rookie, participated in a sleep study under Cheri Mah, a researcher at the Stanford Sleep Disorders Clinic and Research Laboratory.
Fields wore a watch — “kind of like a mini-seismograph,” he said — that charted how much sleep he got each night.
Mah, who said she had also consulted with N.B.A., N.H.L., college teams and Olympians, said sports teams had started paying attention to the topic more in the last two years. She said athletes, in particular, were susceptible to sleep debt: an hour less of sleep a night here and there quickly accumulates.