Why it happens Babies can be notoriously squirmy sleepers. Starting around three months, your baby may moan, groan, whimper, and kick in his sleep. These night wakings are associated with cognitive and motor development . For most children, head banging or body rolling is not a problem either.
Babies often rock or bang their heads to fall asleep.
Although it's not likely, restless sleep may be a sign of sleep apnea , according to Jodi Mindell , BabyCenter's sleep expert. Sleep apnea is a serious disorder that affects about 2 percent of all children. When your child's muscles relax at night, these oversized glands can temporarily block air from getting to his lungs. What you can do about it Since restless sleep is normal, just let your baby be, especially if he doesn't completely wake up. If he does wake up try to give him a chance to settle himself back to sleep before you go to him.