So why, you might ask, am I such a fan of cross country biking?
1. It's great exercise.
2. It keeps you cool. With XC biking you are moving along pretty well, and the wind helps to cool you down.
3. The trails are very scenic. Instead of huge terrain, you just have a scenic tour of nature.
Now, that site is also great if you want to learn more about trail bikes or what equipment you might need to get started.
So get out, pick a bike (hint: xc bikes are the best), and get out here and enjoy nature!