It is the part of the sleep cycle that allows us to feel refreshed in the morning. It is also the stage of sleep during which the body repairs and regenerates tissues and releases certain hormones.

Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

Science reveals sleep needs vary dramatically between individuals. Discover your personal sleep requirement, why it matters, ...

A person’s sleep needs are highly individual, Holliday-Bell says. If you feel refreshed and ready for the day after nine ...

Science reveals a powerful, often overlooked link between sleep and sex. From hormonal shifts to intimacy disruptions, here’s ...

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

Research shows women need more sleep than men due to biological differences, hormonal changes, and lifestyle factors.

For seven days, they recorded their diet against objective sleep parameters. The study concluded that a 6% rise in protein increased total sleep time by 0.3 hours — that's 18 more minutes of sleep a ...

We’re glued to our screens, aren’t we? Our smartphones are our alarm clocks, portable offices, and our connection to the ...

Hone Health explains that while high levels of cortisol can contribute to weight gain in women, changes in other hormones ...

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