That might seem like an evolutionary disadvantage, given sleep leaves us immobile and potentially vulnerable to attacks for ...

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

If you often feel low on energy, one of the first things you should ask yourself is how much sleep you're getting. Good sleep ...

Healthy sleep includes multiple components, such as number of hours of sleep per night, how long it takes to fall asleep, daytime functioning and self-reported sleep satisfaction, and addressing these ...

Social media has a name for this — cortisol addiction. "The concept of cortisol addiction has gained a lot of attention on ...

Navigating bedtime with a teenager is, in many homes, a nightly battle with a constant refrain: Get off your phone! Go to bed ...

For a good night of sleep, consider getting your circadian rhythm back in sync with the sun. Here’s how to do it.

Sunlight plays a huge role in our energy levels and sleep quality. One study found that those who got enough morning sunlight ...

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

“When we do actual tests to measure ... will definitely affect how your sleep will be organized and how refreshing it’s going to be,” Gurubhagavatula said. Many people turn to alcohol ...

Feb. 17, 2025 — The causes of obesity are complex and influenced by many factors. While research has highlighted connections between sleep ... does, however, increase in the hours prior to ...