I agree with the thought above, but clearly a personal decision and you/he should do what you think is best. I had an ileostomy in high school and played competitive tennis. I took a gap year between high school and college in order to have my J Pouch surgery and recover before freshman year - it worked really well for me as I didn’t miss any sports and was 100% before going to college....and the extra year to mature didn’t hurt! I just turned 50 this year and while I deal with pouchitis, I have no restrictions when it comes to athletics. I work out every day - crossfit, tennis, boot camp, weights, etc. I don’t have any restrictions other than bad knees which is hereditary. It’s how I keep my sanity.