Also your shoulders and pecs help to get back easily if you had your shoulder lowered and you pec extended by raising it and contracting your pec you'll get to a standard form for a comeback. It only works in certain positions if your facing the ground
What MarcoYeh said is very true. I think it's the best way to create a comeback, by contracting then extending your wrists you get yourself a push onto your opponent it can be done more than once.
I had a replay where I did 2 push's with my wrists and won, don't know if I still have it.