Baby Sleep: Dreams
Babies will grimace and do all kinds of strange things while they are in what we call the stage of dreaming sleep or active sleep. During active baby sleep, your newborn will exhibit all sorts of unusual behaviors while her body and brain are working things out. This is normal and is nothing to worry about. In fact, it's a good thing: During this stage of sleep, a lot of synapses are being formed in your newborn's brain, getting her ready to learn!