So many people have questions on when to them. If you just think about sports, like say mma, you have one guy trying to leg lock you. You respond with a max effort contraction(not most of the time but stick with the point) to pull your leg out. When you get up and stand with the opponent you can still dynamically throw kicks, sprint for a tackle, etc. to hurt your opponent. Mind you this is all happening in one session, not another fight taken 72 hours apart. Eric Cressey will explain this further.