My son is almost 15 years old and has always lead a VERY full and normal life. I've never restricted his activity, just been prepared for whatever might happen. He rides dirt-bike & 4-wheeler, bicycles, roller blades, skate boards, sleds, snow boards, and rode horses when he was a toddler. He played baseball & wrestled on the school teams. Now he's a Junior Fireman with our local fire company! We have been lucky that he's always been easily managed in the past. Although now that he is reaching puberty we are having a little trouble with his lab results-they are showing that he is slightly over-surpressed, so we are working on that. He lost some weight when we lowered his prednisone, so we put the dose back up, and are still looking for a solution to the problem.