@Gardner well, I think there’s a narrative or belief that competitive sports do these things, but really in all but a handful of cases the bulk of competitive sporting leads to metabolic dysfunction. It’s over-exercise, coupled with under-nourishment or incorrect nourishment, typically wrapped in a mythos of sacrifice, (for the team, for the sport, for the coach, etc).
Played for fun, maybe with friends, sure, I could see it being positive socially, but even then, running, depleting glycogen stores, illiciting cortisol response, upregulating lypolisis, hyperventilation. The negatives seem to vastly outweigh the positives, (of course this is just my experience/opinion). Done habitually, these conditions become chronic.
Me personally, I’d say I encountered thyroid dysfunction, excessive cortisol, malnourishment, an unhealthy exercise habit, body dysmorphia, estrogen dominance, hair loss, brain injury, depression, drug dependence,IBS, etc, (general symptoms of low metabolism). I think my experience is not unique. It seems like most professional athletes suffer in the same ways, (whether it’s the weight gain of retired athletes, drug addiction, alcoholism, symptoms of serotonin overload - antisocial behavior, poor sleep/recovery). All just signs of poor metabolic function.