I guess you and I differ on this issue. Any young person with IBS should feel free to persue their physical activity interests aggressively and without interuption while focusing on developing dietary, stress and other life style management techniques to minimise IBS symptoms. This approach has worked well for me a few decades - physical activity was never part of the problem - it was always part of the solution
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS