Well, I am a newbie. Just bought a bike and decided on a 2007 Trek 3700 in black. (Side note: Let me know what you think about the bike). I wanted to know—since I am trying to get ready to take on the trails—if there is any advice you can give me as to how to physically prepare for it. I ride it on the road at night to get used to first, just riding, switching gears (since I have not ridden on a bike for maybe 20+ years) and second my endurance.