intervals and a sore arse !!! AGAIN

went off to club interval session tonight feeling really good ran hard for first 6 x 1 min and felt tops but for the next 6 had a slight niggle in my left buttock / hip really not sure where the pain is coming from but it really is a pain in the arse!!!

this is the second time ive suffered from similar sypmtoms but in opposite buttucks im thinking it must be my new balance shoes that are paggered but i am trying to strech the life on them a little as ive only done +/-380 miles in them and id like to strech them to 500 but if this pain continues after running hard in them ill have to part company with them!!!
(diet gone tits up this week - work related stress to blame but im trying to deal with it)
be good guys
sng aka sorearseginger!!