For me, the initial diagnosis was based on:
- family history of asthma (lots of it)
- description of symptoms -- I had had a couple of full-on attacks with bad wheezing and inability to breathe
- testing my lung capacity by breathing into a thing whose name I can't remember right now. Basically a plastic cylinder with a thing that moves up when you breathe really hard into it, and how far the thing moves determines normal lung function vs compromised lung function.
If you tell your GP that you are wheezing and unable to breathe in, and he just assumes it's because you're unfit, find another doctor. Being unfit means you have to take lots of deep breaths when you exert yourself. Having asthma means you're unable to take those deep breaths.
And if you're doing 50-mile rides at 14-15 mph, I would say you are actually quite fit in some ways even with any health problems caused by excess weight. I weigh about 142 right now and that's my average speed for a 50-mile ride.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles