A new study in Nature reveals that people who sleep too little or too long show signs of accelerated biological aging and ...

New research suggests that both too little and too much sleep may influence how the body ages.

A sweeping analysis of sleep duration and signs of ageing in half a million adults has pinpointed a sweet spot — about six to ...

Whether it’s due to stress, screen time before bed, caffeine, an inconsistent sleep schedule, or an underlying health ...

Scientists have found that the amount of sleep you get each night doesn't just result in brain fog and under-eye circles, but ...

Your sleep habits may be affecting more than just your energy level. A new study says they could also impact how quickly ...

New research finds obstructive sleep apnea is associated with higher muscle mass index but lower muscle density, signaling ...

This article is a part of CNN Underscored’s Guide to Sleep, a weeklong focus on everything you need to sleep better. We’ll be featuring new products, tips and exclusive deals all week, so check in ...

Early to rise makes a person healthy and wise? Not necessarily. Depending on how your body clock is wired, the opposite may be true! Every person's body is set to follow daily patterns, including one ...

As a side sleeper, I’ve always been worried about the effect the sleeping position has on my spine, hips, and shoulders. (I’m no stranger to waking up stiff, either.) To add to that, I’m in a constant ...