I am 52, female, slim, very healthy, runner, swimmer, healthy foods, occassional red wine, plenty of sleep, good blood
work, low blood
pressure, etc, picture of health. Have been this way forever. Went to Dr. in fall, they said I was healthy and would not even order a stress test. Same symptoms as others describe, can't get air all the way into lungs without straining or yawning. Now is constant, whether sitting at desk or running 5 miles.