HI, I am a 32 year old guy, 5 7 and fairly athletic in built. For the past few months, i feel extremely unpleasant while climbing up the stairs or if i do some physical exercises, which need not be very strenuous. I feel severe palpitation and i feel the need to have deep breaths. If i end up doing something which is a little more strenuous, i sometimes feel dizzy as well. I have always been active in sports all my life until the past one year.