Are you feeling bored by a mere triathlon? Is the Iron Man just a piece of cake for you? Then it is time to get into the Gigathlon. If the triathlon of London means sauntering through the City, then it's high time to take it one step further.

The American Council on Exercise offers these suggestions to keep a workout from getting stale: * Make a small change to your normal workout. For example, run or walk outside instead of inside. * Try a new sport or activity. Learn to play a new game or take a class that teaches you a whole new way to keep fit. * Work out with friends. * Keep challenging yourself with new heights and new goals, such as running longer or faster, or swimming more laps. * Make sure you vary your workouts; try a lot of different exercises.