If you depend on your DVD player to get your workout of choice, then you might find yourself getting bored with your collection of fitness videos. Boredom can be fatal to even the most well-planned exercise routines, so it's crucial that you mix up it up every now and then to challenge not only your body, but your brain as well.

Netflix and other subscription DVD rental services are a handy way to do just that. For just $10 a month, you can have a new fitness video delivered to your doorstep. It's the perfect way to try something new and stay committed to being physically fit at the same time. (A subscription may also make a great holiday gift...nudge, nudge.)