Certain proteins in your muscle fibers help regulate sleep duration and quality, according to a new study.
Aging men's testosterone decline is largely due to the fact that older men sleep less well than younger men.
Having sleep problems? Strength training can help, sports scientists at Appalachian State University in the US discovered. According to their study, doing strength training early in the morning helps you fall asleep earlier at night, and doing strength training later in the day reduces the number of times you wake during the night.
For many U.S. adults, sleep of 6 hours a night [...]