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 ...

The jellyfish, like the sea anemone, although lacking a brain, experience deep rest phases that meet all the criteria of ...

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 ...

Your sleep cycle includes light, slow-wave, deep, and REM sleep, which repeat throughout the night. To get restful sleep, you need to spend the right amount of time in each stage of the sleep cycle.

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 ...

Does your teen always seem exhausted, irritable, or struggling to stay awake in class? You're not alone. We're facing what experts have called a sleep deprivation epidemic among American teens. The ...

One of the toughest things about being a caregiver to a baby or young child is the lack of sleep. Sleep is almost universally named as a top source of stress for caregivers of infants, and for some ...

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 ...