Goji Play might just be the thing that makes your gym membership worth it. Developed by the interactive fitness company Blue Goji, Goji Play transforms any cardio equipment into an interactive game machine. Just attach the wireless controllers to your iPad, clip on the activity sensor and play. Game industry veterans Kai and Charles Hung, the inventors of video game franchise Guitar Hero and founders of Blue Goji, are unsurprisingly the ones who've done it: bringing fun and motivation we experience whilst playing a video game to a workout session.

With Goji Play, you become the ball that smashes the blocks in the game 'Smash the Blocks', and the faster you move, the faster you smash. And to help you remember you're actually working out, you see your progress towards fitness goals in real-time during your workout. All you need to is a mobile device and the Goji Play kit to start playing (err, working out).