When is the best time to take nap? A sleep doctor reveals the optimal time of day to take a nap in order to feel rested and ...

Professor Nick Dunn proposes a bold vision where darkness becomes part of urban design, helping humans and other species ...

I am not a doctor and indeed have no medical expertise. But I imagine there are few people in my position—an American, a ...

There’s no universal rule that says you have to go to bed at a certain time when you’re an adult, but you’ve likely heard the common refrain that it’s best to fall asleep before midnight. But how bad ...

More Americans are cutting back on snacks like chips, pretzels and cookies — but not for health reasons. Why then? Rising prices. Over the last four years, for example, the price of chips has surged ...

Done wisely, naps can be a valuable way to boost your focus and energy. A sleep researcher explains how to get it right.

Another reason that stress could be waking you up is because it impacts how deeply you sleep. As explained above, lighter ...

When you take longer to fall asleep, this can affect your sleep quality and you may feel sluggish the next day because you ...

Circadian rhythms are endogenous time-keeping mechanisms that regulate physiological processes in response to external light-dark cycles.

Ever wonder what’s going on while you’re knocked out cold? Sleep isn’t just a time when you’re unconscious—your body’s actually hard at work. Most people spend about a third of their life asleep ...

Exercise is one of the most effective ways to increase serotonin naturally because exercise increases the availability of tryptophan – a precursor to serotonin – in the brain and promotes the release ...