my kids aren’t really that competitive and not terribly sporty but enjoy being active. It’s really hard once they hit 12 and are not good enough for swim team. Not good enough for football team etc etc. we try to bridge the gap I do a lot of bikes runs etc with them at the weekend but it’s hard to find activities that really increase fitness. I am not cut out for park runs due to an injury. I suppose I could send them round park runs on their own although I don’t think they would massively enjoy. They would like to join a swim only for fitness team. But such a thing doesn’t seem to exist.