India, Aug. 20 -- Exercise is supposed to make you feel stronger, fitter and more energetic. But sometimes, changes in how your body responds to physical activity can signal that something needs medical attention. The challenge is that many warning signs are easy to dismiss as ageing, being out of shape or simply having a bad day.

Board-certified cardiovascular surgeon Dr Jeremy London, in his August 19 Instagram post, highlights four symptoms that deserve attention, particularly when they represent a noticeable change from how you normally feel during exercise. (Also read: Trying to lose weight? Why sustainable lifestyle changes may matter more than extreme diets )

"Chest tightness or shortness of breath that builds with exertion and f...