This might notnsound as interesting as playing dark souls or sth, but doing sports is actually a good idea. Not only you get on shape but also you can startnthem with your friends and stronger(or however u spell that) your relation ships with them. If taking it up with your friebds is not annoption, well u can always get new ones, okno ), but yeah.

I would suggeat u start with something light, unless you want a challenge. Going to a gym or playing a team sport are good options, i would recomend boxing, but just because i enjoyed it while we practised it with my buddies or handball, which is quite fun if u like fast sports.