hi, i went riding wednesday and saturday
and on saturday i had a really sore back like a sharp pain , i think because of the bumps and whoops but on wednesday i didn't have this problem,
i train regularly for mx and sit down on my bike when riding it on a mx track were other riders stand up, i can't be bothered to stand as a loose momentum through corners and on straights.
ahh!!!! REMEMBERED i forgot to stretch
have you ever had a problem like this?
and im only 15yrs old