The excuse: "I'm sick of the same old treadmill routine, and don't even get me started on the elliptical."
How to avoid it: End the workout rut before it starts by trying a new route, a new circuit, or a new fitness class. Not sure which type of class to try? Give popular workouts a test run at home before signing up at the gym. Follow these video workouts for CrossFit, Zumba, barre, and more to learn the basics of each class right in your living room.