But the little twinges that had developed into full scale injuries last year were there : the right hip flexor snapping painfully , the knot in the right hamstring that kept my leg from extending .
My shoulders did n't slouch and my core was really steady .
The little twinges that had developed into full scale injuries last year were there : the right hip flexor snapping painfully , the knot in the right hamstring that kept my leg from extending .
My shoulders did n't slouch and my core was really steady .