But it's also one of the most injury prone sports.start with running, its cheap and relatively easy if you start slow. If you stick to it, guaranteed you will drop pounds.
You get hurt there, you're out on the bench and all your efforts to build fitness go out the window in about 2-3 weeks; it can teach you to listen to your body..unless you're too stubborn and prideful. (ask me how i know)
Another option would be to go with a stationary bike, or bicycle on a trainer. You can keep binge watching your tv shows and you're doing something and it's very very low impact.