
The more you excercise, the more "credits" you earn in your bank. The credits unlock other excercises or yoga poses. I really like the way the excercises force you to focus on your center and posture. The closer you are to center balance, the more your score for that excercise goes up.

Now, if you'll excuse me, I have an overwhelming desire to her my son's infectious laugh so I'm off to play excercise. (PS- Nintendo has no idea I posted this).
Update: I ended up doing more time because I unlocked more excercises. And I'm happy to report my Fit age dropped significantly to 36!