Before we talk about how boring your cardio routine is ... let's talk about adding an element of fun (of course, that depends on your description of fun.) Next time you're on the treadmill or heading out for a run, you might want to give joggling a try.

Joggling (as noted by Wikipedia) describes juggling while jogging. Jogglers say the rhythm of juggling with three objects corresponds perfectly with the action and pace of running, and call joggling a fun and effective full-body workout. Not to mention, juggling will help to improve hand-eye co-ordination and according to a university study may also boost your brain power.

While it's not for everyone (especially those who are not coordinated), the act of joggling has built a strong following from competitive multi-taskers. In my opinion, juggling is a difficult task on its own (so is cardio for that matter.) Combine the two and you've got yourself a sport in which only a rare breed of athletes can succeed.

On the other hand, it's a very accessible sport ... requiring only a pair of sneakers and, of course, a set of balls!