As she reaches down to grab the bar, if I was to come here and try and tickle her armpits, she's squeezing her tricep into her lat to block that... We're gonna squeeze the tricep into the lat and protect the armpit to create a rigid torso. Another way that you can think of this if you want to start from the top is to try and reach your arms down as long as you can. As I'm standing up right here and I push my arms down my side I'm not only elongated my arm, which is a great thing to do in the deadlift, I'm also engaging my lats very hard. I can reach down and maintain that same position.