I didn't ride yesterday; too busy eating and partying and watching football, but in 2008 overall I did manage 206 rides for a total of 7,577 miles. That's an average of 37 miles per ride, and 146 miles per week. Yay, me.
I'm pretty sure I could never get that much exercise any other way. I had to find something I liked to do - anyway - and in so doing trick myself into getting a workout. Cycling is not for everyone, some people like to run, or swim, or whatever... one thing for sure, it beats walking to the 'fridge :)