I have been playing sports alll of my life so I am going to conclude that over all sports have a positive effect.they are very fun and you can get a lot out of playing sports.just do it and have fun while doing it.if you never played a sport I advise you to get on a teeam and be active.its a easy way to stay physically fit.its like a motivation.its hard to not play sports and work out you have to be a well driven and dedicated individual.