I was reading Bryon Ferguson's book and he talks about a pretty complicated thing. Here is what it says basically.

He said to hold in your breath by pushing out your adomen and it gives you a sense of lowering your sense of gravity. He then says to draw to anchor but never stop drawing, and continue to pull by pushing your elbow back, then kinda inhale more to fill your lungs, and this will expand your chest and keeps you continually pulling to get a clean release.

Man, I understand the instructions, but its tough to follow it to the letter.