On today's episode of Music Core, the beastly boys of 2PM returned on stage to perform their latest hit track Without U. 2PM's performance was fierce and impressive even though they weren't 100% healthy. Fellow 2PM member Junsu who showed off his abs yesterday wasn't here to perform again with the boys just like yesterday's Music Bank. Check out their awesome performance below! http://www.youtube.com/watch?v=KenuPbEcfS0