Let's be frank: Indoor exercise can suck. You're usually stuck in a gym or your home, and you can't get feedback without either a pricey trainer or a distracting mobile app. Runtastic thinks there might be a better way. It just developed Oculus Rift versions of some of its strength and toning exercises that could liven things up. It sounds a bit ridiculous to strap on a virtual reality headset for your workout (and it probably still is), but the technology promises things that just aren't possible in the real world. You can get fit in much more interesting locales, such as the great outdoors or a beachside home, and the entire interface is designed to keep your hands free -- a virtual trainer and hovering stats let you see how well you're doing while in mid-lunge.