I think it's cool as hell that you are trying to improve how you feel so you can ride better!
In my humble opinion, consistency is key in both diet and exercise. Finding stuff that you like doing and that fits into your (probably very full) day is great too.
I love mountain biking, I find having strong legs and core muscles (low back and deep abdominals) gives me a lot more power.
I probably would have met you last weekend in Pueblo if my canopy hadn't gotten eaten by the huge wind on Friday and Saturday...by Sunday I had had enough. Look me up in Hastings in a couple weeks though, I'm usually set up in front of the red and white chow tent.
Best,
Bree at XBAM