Have you started an exercise program lately? The Downey YMCA has a really great program called FitLinxx that tracks your workouts and makes it easy to see your progress.
I know this because I joined the Y (again) a couple of months ago. And I had a couple weeks' worth of good workout sessions.
Then I went on vacation. And I came down with a cold. And then my daughter (my exercise partner) came down with a cold.
It's really hard to get back to a routine after a few weeks' off.
How is your program going?