If your baby turns into a tiny, thrashing tornado between 4-7 AM, you’re not alone. The early morning hours are dominated by REM sleep (Rapid Eye Movement), also called active sleep. During this stage, babies breathe faster, twitch, grimace, grunt, jerk their limbs, and may even let out little cries. It’s noisy, but it’s normal. On top of that, sleep pressure is much lower by morning, meaning babies are more likely to wake fully between sleep cycles. Many instinctively try to resettle themselves