Hi Annieled...welcome!
Exercise is one of those bizarre contradictions contained in the riddle that is CH. For some...heavy exertion can abort an attack...while for others it is a trigger. Never made any difference either way for me....but I did notice that barometric CHANGES (not high or low) but the actual SWIFT change was a sure trigger. Oddly...never had a problem with air travel.
Edited to add: heat all on its own is a trigger for some.
Maybe you can again yog during a different season. Do you have access to and a script for oxygen?...you may be able to have a tank standing by and abort as the hit comes up. There are many clusterheads who worship the little green headed buddy that is an O2 tank...truly a life SAVER and changer................
Best,
Jon
PS and btw.....I'll never forget the drunk coworker who diagnosed me.."yu got toooooo mush stresssssssshhhhh!" She was right about the stress but wrong about the etiology. And note....there are some who get at least some relief by indeed staying hydrated... if not "sloshed".