Originally Posted by
theextremist04
Do core strength workouts. I'm guessing that's all it is, but I'm no doctor. So yeah.
this might be it. i remember after doing some deadlifts one day, and then when i went to ride my mtb, my lower back was a bit sore because i was tired from the lifts. otherwise, i can ride hours on end without a hitch. did you work out any before your ride? how long were you riding for? do more situps.
just my .02 gl