Your nightly sleep cycle plays a key role in the quality of your sleep. Here's what happens in each stage and why it matters for overall well-being.

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why do I feel better rested when I wake myself ...

Sleep is not a passive state. There is a tendency to think that waking, daily life is our real life and that sleep is a separate, passive state. But, in reality the brain is very active during sleep ...

When we sleep, the body releases its 'growth hormone', building up and repairing muscles and bones – but the details of how and why have been something of a mystery, until now.

The bacterial molecules, believed to stay in the gut, are present in the brain and linked to sleep patterns, discovered ...

We’ve all experienced this: You’re in the middle of a lovely dream. Perhaps you’re flying. As you’re soaring through the air, you meet an eagle. The eagle looks at you, opens its beak and – BEEP! BEEP ...

Newborns sleep a lot in short cycles, and frequent waking is totally normal. Watch for early sleep cues to help your baby settle before they get overtired. Simple environment tweaks, like blackout ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why do I feel better rested when I wake myself ...