[branden]

I'm not someone who can exercise for its own sake. I'm no good at creating a structured routine for myself, and I'm terrible at following schedules. I get around this by living a bikeable distance from work and the grocery store. I've been able to cram in around 30 miles of bike riding per week simply by forsaking the car in my daily activities. If you can't keep yourself sticking to an exercise schedule, try piggybacking it on to your existing routine.

[natrius2]

I can't recommend this enough. I'd lost weight before, but could never keep it off. Biking helped me sustainably lose 30 pounds. I also get to be even more smug than Prius owners.

The downside is that my car doesn't start anymore because I never use it.

[WalkingDead]

Watchout biking. It may cause impotence. Not joking.

http://healthlink.mcw.edu/article/1023994375.html

That was the first link from google. There are others more informative. Make a few searches if interested.