4 cert, Bonnier AB, iOS

If you aren’t one of those who view running as a pleasurable activity (yo) and have a serious aversion to gyms (check), anything that motivates you is probably welcomed. Teemo is an app for iPhone and iPod Touch that allows you to team up with friends to complete fitness challenges. Each challenge has a name and theme. Climb Everest puts the emphasis on exercises such as lunges and squats, while Eurotrek tests your backpacking skills, lugging bags around and getting to the sights of some of Europe’s best cities.

As you complete each exercise, there is an audio and visual prompt to let you know when to start and stop, and you can play your own music while you workout. You can add your friends to challenges, and each time they complete an exercise, it moves the whole team closer to the finish line. The great thing about Teemo is that you can do as much or as little as you like – a few exercises while you have 10 minutes to spare, or a full-on session. You don’t need any special equipment, either. So there’s no major commitment; just a few minutes and the app.