Hi there, Both my cardiologist and neurologist would like me to build some muscle especially in my legs, so I'm working with a personal trainer on strength training. Before I developed POTS I was an avid runner and always enjoyed exercise. However I began noticing that I would have POTS attacks between two to 24 hours after working out. During training I felt fine, but the nausea, tachycardia, chest pain, diarrhea, shakes etc. would hit me afterwards. For some reason these post exercis