Is it normal for my baby to mumble and move while she sleeps?

Is it normal for my baby to mumble and move while she sleeps?

During certain sleep stages you are more active and alert. You can toss and turn a lot during a non-REM sleep. During a REM sleep you are dreaming a lot. Especially in young children, you may be doing some twitching movements. There is a very interesting phenomenon called hypnagogic hallucinations that you can have. As you fall asleep you may go through a phase of very vivid emotions. It's not really dreaming but it's actually hallucinations such as you may be hearing things or there may be a lot of movements there as well. You may be doing some twitching. Twitching can occur, especially in young babies during REM sleep.