My son is 11, weighs about 105. He's about 5 feet tall. He's normal size for his age. He spends too much time watching TV. We bought him a bike but he's afraid of it, can't ride yet. He also is on this damn computer too much. I like technology but in his case its a hinderance. We go for walks but like the doc said before he was born, "he'll never play sports." He's in the scouts, last week they did a run, situps, pushups. My son can't do one. He tried to run but he also was born with lung desease so I had to coach him to get him to try. I'm 54 and thanks to an idiot who rear ended me my running days are over, so I wont be pushing him with one of those jogging buggys.