Does anyone else here have skipped heart beats whenever they have an esophagus (or stomach?) spasm? I thought I was imagining it, but I've been paying attention and it actually does happen, it's so bizarre! It's been happening so much it doesn't even scare me anymore. My body is a perfect biological sample that could be used to once and for all debunk intelligent design. I think upper chest breathing from anxiety and POTS has moved everything up (diaphragm, intestines, etc) and irritating my vagus nerve. Or could it be a vicious cycle where such mechanism actually causes one to lose autonomic homeostasis and develop POTS? I'm convinced I hyperventilate even during sleep (especially REM, during which I sweat a lot.) Don't quite know what to do to break the cycle. I've been using my belly muscles to drive everything downward so much past few days I think I'm going to get a hernia.