I am 63yrs old male and have suffered 4 heart  attacks , and also  have problems with my lungs. At the moment if I do any excercise above my usual everyday things , maybe a family wedding or a little dancing , the next day I experience shivering and nausea, is this normal and why does this happen ?
Hello Surviving 4 hearts attacks is a big thing, with good vibes I want to congratulate you. Now I want to tell you that even after first attack our heart looses some muscle mass which means it looses some function (contraction), so after 4 it might have lost a lot in your case, due to this decreased function the work pressure comes on your lungs due to which patients develop breathlessness. Heart attack patients are usually kept on diuretic meds to keep blood volume low to support weak heart and side effect of these Chat Doctor. Advise: Get an ECHOCARDIOGRAPHY done to assess your heart function and a serum electrolyte done and be very regular with your meds and restrict your fluid intake to 1 to 1.5 Lars in total per Danish you good luck.