I just want to thank you all for this thread. Very timely for me. I haven't been to the doctor yet, but just passed the 1-year point last week. The hot flashes are killing me. I've always hated heat and humidity, plus have a history of panic attacks, so this is not fun. It's too soon to be able to tell how my ideal comfort zones may be changing. So far I haven't noticed anything connected with exercise (aside from noticing that I HAVEN'T noticed any hot flashes during exercise). I'm afraid of what summer will be like, though. Especially because I'm planning to do a marathon in September. For me, biking has always been fine in hot weather, but running is another story.