My husband and i I just joined a gym. He needs to loose weight and will not go alone. I, however, DO NOT need to loose weight and walking up a flight of stairs will make me sore for days. Does anyone have any advice for what is good to do? I am petrified of the pain that I am going to be in if I accidentally overdo it. I did an exercise video once and missed work the next day because I felt like I had the flu after working out.