People on TikTok and other social media say they feel more alert when they have had fewer hours of sleep—but sleep scientists ...

Sleepiness is often written off as a byproduct of today’s ever-on society, but it can have serious health consequences, ...

Sleep quality matters more than quantity. Learn why you might still feel tired despite getting eight hours of sleep and how ...

Waking up after eight hours of sleep should feel refreshing. Yet, many people open their eyes feeling just as exhausted as when they went to bed. It's ...

Aside from feeling tired, signs that you're deprived of quality sleep include your mood, the types of food you're craving, ...

As I interviewed mothers about the symptoms of their persistent exhaustion, they described brain fog, sleepiness, and general ...

Sleep is a necessary part of people's daily routine, but modern lifestyles and technology have ushered in an era of decreased ...

Part of cortisol's impact is mediating the stress response — that fight-or-flight instinct that allows you to deal with ...

Generally, it should take 24 to 48 hours to recover from a long run. “More experienced runners who have built a strong ...

Sometimes energy drinks have the opposite effect and lead to tiredness because you “crash.” Find out why drinks without sugar ...

A study on birds finds that when jackdaws are sleep-deprived, they stop sleeping with one eye open and enter deeper sleep, risking safety.