Hi there, My ability to walk seems to get worse in heat and at times of high stress. I have gotten so used to this that I usually limit walking time to about half an hour and stroll rather than power walk or anything like that. I recently went out walking with a friend who doesn't know about my MS. We got a little lost and while he was walking for almost 2 hours, I was dragging my leg behind me (and behind him) for that entire time. By the time we finally made it back to the car, I was feeling really broken but trying to stay chipper. He recently commented that I'm not old, and he doesn't understand why I don't join a walking group or something to build my 'stamina'. Again, he doesn't know I have MS, but I feel very offended! Talk me down please.