@kelvinteo93: If you only touch the heels, it will not stimulate the oblique muscles at all. It is recommended to bring the entire torso side up to better stimulate the oblique muscles. #sideheeltouch #sidetouch #oblique #6packs #abs #6packsshortcut #6packs #gym #malaysia #sigma #coach #personaltrainer #Fitness #fyp #tiktok #tiktokguru