Daylight Saving is here and getting additional rays of sunlight can help save your sleep. You're not alone if you had trouble waking up this morning after the time change. The good news is that ...

The brain has a master clock that is set by exposure to sunlight and darkness. This circadian rhythm is a roughly 24-hour cycle that determines when we become sleepy and when we’re more alert.

Early Sunday morning, the United States — minus Hawaii and Arizona — will enter daylight saving time, the annual tradition of springing forward one hour. Most Americans will lose an hour of ...

Sunlight is another important factor that influences our circadian rhythm — the body’s natural 24-hour cycle that regulates alertness and sleepiness, typically in response to light changes in ...