SmartMio is a new muscle stimulator controlled by an app that works one's body out even when sitting down.
According to PSFK, "SmartMio uses electronic muscle stimulation or EMS, and mimics what the brain does during a workout – that is, send nerve impulses to engage the muscles." This way, your muscles are still doing what's normally expected of them when lifting weights or doing sit-ups, only without the effort. Electrodes can be attached to the body in different areas, and through the app wearers can even choose various workouts and lengths, all while sitting in the comfort of their own chair.
If you're someone who rarely has time to hit the gym after work, the SmartMio could be an excellent alternative - and you don't even have to break a sweat!