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.
• Treat yourself to a music player, pedometer or a new type of workout equipment.
• Allow yourself a bit of time off. But always get back to exercising after a little rest.

-- Diana Kohnle