If you’ve ever felt tired after a full night’s sleep, you likely didn’t get enough deep sleep. This stage of sleep is considered to be the most restful, so getting enough of it is key for your overall ...

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 ...

Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

You’ve heard of REM sleep but what about deep sleep? Experts share why it’s important and how to make sure you’re getting ...

The key to keeping your wits about you as you age may lie in shut-eye during midlife. A study found that people over 60 who didn’t get enough slow-wave sleep — the third stage in the human sleep cycle ...

Many people clock a full night's sleep yet wake up exhausted. In a detailed conversation with an expert, we unpack why 8 ...

You drag yourself through the afternoon feeling exhausted, finally give in to a nap, and wake up feeling worse than before you laid down. That groggy, disoriented, almost hungover feeling isn’t your ...

Caroline Igo (she/her/hers) was a wellness editor at CNET and holds Sleep Science Coach and Stress Management certificates from the Spencer Institute. She received her bachelor's degree in creative ...