Getting under an opponent's center of gravity: A key skill is grappling is that of LIFTING AN OPPONENT off THE MAT. This is done for many reasons. In Jiu Jitsu but is mostly done from bottom position to set up sweeps and lower body submissions. Understand that you will never be able to lift people bigger and heavier than yourself until you master GETTING UNDER THEIR CENTER OF GRAVITY. only when you can under their center of gravity will you be able to lift them easily off the mat and into the move you seek to perform. In standing grappling this usually entails SINKING YOUR HIPS UNDER THEIRS WITH A LEVEL CHANGE. In ground grappling bottom position it usually entails SCOOTING YOUR HIPS DEEP UNDER THEIR HIPS. When you do this you can lift even very big opponents. When you don't, you will be unable to lift even a lightweight. If you want to make a name for yourself as a dangerous attacker from bottom position, Practice scooting under and lifting daily and soon you will be attacking with much greater effect!
