used to have poor mobility (lower back rounded when squatting, ie: butt wink). mobility drills + stretches + foam rolling resolved this. when im squatting now, the weight feels MUCH easier to move, with the exception of my lower back, it becomes pretty sore. im assuming its just because my lower back has to work to support the weight, whereas before it just rounded. ive only been back in gym for 2 weeks now, so its not like my l.back has been pretty sore for a long time.
just wondering if anyone can chime in with any info or if anyone else had this.