FOR an extreme athlete (78 wrestling with 18 year-olds, pulse UP NOW to 56), VERY short of breath with LIGHT exercise bike and leg and calf press machines (HEAVY 315 lbs.) after only two strip sets, or sitting down only upper breathing, laboring for shallow breaths. Stress test--easier than usual--and echo cardiogram okay. Bent over a bit. Prescribed inhalers did not help.