I go to the ymca, I go swimming to stretch all my muscles. I also use the hottub for a few minute to help my aching back. Also, I use the weight machines this help getting my strength in my arms, legs & back. I have had MS since 1988 & now I am 68 & when I get tired I rest then keep going. When there is humidity & high temperatures I usually stay inside & keep cool. I learned over the years just listen to your body & when I have trouble with balance I know I need to exercise more & it goes away