Two years ago I was 50lbs heavier and if you had asked me, "Hey Sarah, you wanna go for a jog or a hike or a yoga class or something?" I'd be like, "Shut up. Pizza."
I'm not saying it'll work for everyone, and I can't promise you won't embarrass yourself, but give it a shot. If a skeptical, lazy, sassy and formerly out of shape lady like me can start practicing yoga, you can to.