I am pretty active and weight really isn't a problem. I have been stepping up my walking and bike riding to strengthen the legs. An old sports injury left me with one knee that gives me problems from time to time so the bike riding helps. I try to go up and down the stairs several times a day. I live at 118 feet ASL so the altitude does bother me. I take diamox for 2 days before I get to Colorado and for 1 or 2 days after I arrive. It helps condition the blood to run on less O2. In the past I stayed in a cabin at 9100 ft. This year we have moved our hunt and not sure what the elevation will be on our cabin.