Years ago, it used to be standard practice for hospital nurses to leave bright lights on all the time in neonatal intensive care units because it helped the staff better attend to premature infants’ ...

Researchers, however, believe circadian rhythms aren't exact, ranging from 23 to 25 hours. The people who run on the faster clock would be the morning people, and those whose clocks are slower would ...

Apple's forthcoming iOS update promises to incorporate a feature called Night Shift that could help people sleep better. But what is it about smartphones that can mess with our slumber? There is a ...