Medically reviewed by Smita Patel, DO Hypnic jerks are sudden muscle contractions that happen as you fall asleep. They are ...

In recent years scientists have discovered the many ways that the brain is activated during sleep. But we’re also beginning to see ways in which the body is activated during sleep, especially during ...

If you have a cat, you know your little guy spends much of the day sleeping and looks super cute while doing it. Cats are capable of going from zooming across the room to napping on the couch in a ...

Twitching at night—it’s something few of us talk about, yet it’s also a phenomenon that impacts Americans when it comes to sleep quality. And even if you feel like you’re getting enough sleep, you ...

If you’re a pet parent, you might have noticed your dog twitching in their sleep. Firstly, it’s important to note that for the most part, twitching is not uncommon. However, while these involuntary ...

When her daughter was born two-and-a-half years ago, Mary Goldsberry-Troyer eagerly watched for the typical developmental milestones in her firstborn. She noted when Vivi smiled, rolled over, and took ...

When Massimo Scanziani’s daughter was young, he’d often see her eyes twitching beneath her eyelids while she was sleeping. These rapid eye movements (or REMs) are so obvious, Scanziani told me, that ...