I'm now learning lots about bikes but already knew about wheezing as an asthmatic. This past summer was my first time on a bike in many years. I'm slowly, week by week, getting a bit stronger and faster but what passes for hills here in flat southern Rhode Island would kick my butt. After about 5 months I began to see progress on hills also. I came to a hill where I would usually slowly grind over in a very low gear. A breakthrough occurred the first time I was able to stand on the pedals and charge up. It felt great to hardly lose any speed. I began to fantasize about a long climb in the Alps, with the peloton strung out behind, wearing pained facial expressions as they tried to keep up. Wonderful fantasy and no controlled substances involved. I would encourage you to work up your own fantasy and take your time about it.