The Nature study introduces “Sleep Chart,” a framework linking self-reported sleep duration with 23 biological aging clocks ...

Twice a year we change our clocks by an hour, with Daylight Saving Time sending the clocks back an hour in spring, and ending when the clocks go forward an hour in the fall to return us to Standard ...

An analysis of biological clocks throughout the human body suggests that too few hours of sleep—and too many—may speed aging ...

This illustration shows how the components of the cyanobacterial circadian clock interact in a 24-hour cycle. (Image credit: Andy LiWang) Daily cycles in virtually every aspect of our physiology are ...