So I am having weird heart things happen. I’ll be laying in bed watching tv not even moving and all of a sudden my heart starts beating really fast like I just ran a marathon but I’m literally just laying there. Or other times it will feel really weak. Last week I woke up in the middle of the night and my heart was beating really slow and my arms and legs were numb and I felt really nauseous and like I was going to pass out from lack of oxygen. I’m only 120 lbs but I eat pure junk food so idk if it has something to do with that or what. Any ideas?