Why can't I scream in my dream?
Approved answer
Why You Can't Scream in a Dream
It's often said that when you're dreaming, your body is in a state of sleep paralysis. This means that your muscles are essentially turned off to prevent you from acting out your dreams. As a result, if you try to scream, your body might not respond the way you want it to, making it seem like you're voiceless in your dream.