To date I've enjoyed playful activities like swatting at glowing targets, boxing, or virtual light saber fighting. Assuming you aren't serious about becoming a

To date I've enjoyed playful activities like swatting at glowing targets, boxing, or virtual light saber fighting. Assuming you aren't serious about becoming a jedi and don't do it enough to give yourself RSI it should be OK. Maybe not as good as a personal trainer but I'd be shocked if it was worse than sitting on the couch, on balance. Also, with the cameras on the headset as well as peripherals they can give you some idea of where your body is.