Medically reviewed by Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress, lack of sleep, or too much caffeine.  If muscle twitching happens with muscle weakness or wasting ...

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 ...