What happens to my muscles when i sleep?

What happens to my muscles when i sleep?

Chris Idzikowski (Director of the Edinburgh Sleep Centre) gives expert video advice on: What happens to my brain when I sleep?; What happens to my muscles when i sleep?; What happens to my breathing when I sleep? and more...

When you first go to sleep, your muscles may twitch. Invariably they do--one may or may not be aware of it. It's a kind of disconnection of the system that keeps muscle tone going. Then, as one goes into deep sleep, the muscle tone goes down even more. During Rapid Eye Movement in dreaming sleep, you get active paralysis. If that didn't happen, you'd start to act out your dreams.