It hasn't become a regular habit yet, but about once every week or two I've been taking the Wii Sports fitness test on my Nintendo Wii.

The game gives you three random (or seemingly random) tests in bowling, tennis, golf or baseball from which it calculates an age for you. Wii Sports tracks it over time showing a graph of your age getting younger or older.

Your scores are tracked for everything in the game, but this is really the best solo-play feature in the game. It is the only game gives you several tests is gives you a graph of your strength in speed, stamina and balance.

Though a missing piece of the games is a way to tell which of the practice games will help improve which skill.

Last time I took the test I was given two baseball tests, my absolute worst of the four sports, and I had dropped from 30 to 79. At the time I was discouraged and started practicing sports here and there, but just never got around to taking another test to bring it back up. After all, I couldn't get any worse. Yesterday, after probably a week or more without having played Wii Sports at all, I got my best score ever. My fitness age is 29, two years younger than my real age, and snapped a photo to prove it.