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This is Expert Habits, a regular column in which thinkers, leaders, and other high performers talk about the habits and routines that help them live a better life. Why do we sleep? Dr. Matthew Walker, ...

Lindsay Cook, PharmD, is a consultant pharmacist working with long-term care facilities. Some supplements, such as melatonin, L-theanine, and tryptophan, may have an additive or synergistic effect on ...

If you’re over the age of 50, you may have noticed a difference in your sleep. Maybe you can’t fall asleep as quickly as you used to, hot flashes wake you up at odd hours, or you just never feel ...

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We evolved on a planet that spins in front of a fairly bright star. Consequently, we humans, as well as all other organisms, developed a circadian rhythm in our physiology and behaviors with the ...