Big picture though, since i am pretty much done with weight loss, Mt Biking give me a reason to still work out.

Better yet, MTB'ing will give you reasons to hang out at the trailhead or local brewpub after a hard ride with good friends, and enough of a calorie deficit that you don't have to think twice about having another beer and some nachos.

*sigh* I miss those rides. Gotta get back in shape; or go back to college.