[anigbrowl]

Group physical activities can be good. Group because emotions are social and you can't develop them without peers, physical activities because everyone's strengths and skills are different and, and there's no hiding a difficulty or weakness behind rationalizations. There are many different contexts where this can be applied; things I've done at different times include construction work, rock climbing, martial arts, and dancing.

There are plenty of volunteer work activities with a physical component, and recreational kinds can be competitive or just participatory. You get some healthy exercise but it also pushes you out of your comfort zone and requires you to interact with other people in a different way. Chances are when you start doing something you won't be that good at it, while being surrounded by those who are much better; accepting that and then working to improve your abilities will boost self-confidence and interpersonal skills as well your physical abilities.