Cat fitness really can be fun. However, it is important to start any fitness program only when you feel like it. Don't let a few extra pounds intimidate you into becoming more active. The most important aspect of fitness is: when to start the program. The best time is at about 2 a.m. The house is quiet; there are no distractions. The warm-up is critical. Cats are experts at stretching, so this won't be a problem. Start with a few wind sprints, full speed, toenails clicking on the tile or linoleum floors. A few low but loud growls will help you feel charged up.
Now it is time to add some eye-paw coordination work. Find a marble (the big steelies work even better) and roll that down the floor as the sprints continue. See how many times you can ricochet it off the wallboards before...