Hi there. Thanks for accepting my question. My heart rate is 44 beats per minute and my oxygen saturation is 97% while I was falling asleep. I am a 23 year old female with normal blood pressure and normal bmi. The past week, I haven?t been receiving enough sleep. But my heart rate has never been this low before. I do mild exercise daily. I?m afraid to fall asleep because of my low heart rate. Each time i?m falling asleep, I notice my heart rate drop to 44 and the I jerk myself awake and it goes back up to 50. I don?t have any other symptoms apart from fatigue (it?s 3 am here so this could be the reason why) and tingling of hands which i?m not sure if it?s caused by anxiety.