By tensing and relaxing your muscles, you may be able to return your heart rate to a normal level and easily drift back to sleep. [substeps] Tightly tense and release muscle groups by beginning at your toes and ending with your forehead.
[header] How to fall asleep again after a nightmare [title] Relax your body. [step] In most cases, a person will wake up suddenly because of a nightmare. This sudden shock to your system from fear can cause your heart rate to rise.