Since my knees are kind of jacked I can't run too much so I use the stationary bikes. They have courses on there with a video screen and you do races and stuff. It even gives you a copy of your best particular run on each course and that keeps me motivated. so far I haven't let myself beat me lol
Thanks to Toxic for the Awesome Sig!
Even if the whole world is against you, one thing will never let you down. That thing is beer.