# Why Does Your Heart Beat Faster After Waking Up? Do You frequently wake up with a sudden pounding or racing sensation in your chest? You may feel a sudden pounding, fluttering, or racing sensation in your chest. For most individuals, this occurs as the body shifts from deep sleep https://www.diigo.com/item/note/b2knr/rked?k=8e33d441b96ca9085b8a3e849b134557