The weight of the bar is in your hands. Keep your joints stacked and in a straight line. Unrack the bar in this position.
Push Press Grip
Think about setting up almost like a front squat, fingers underneath the bar. Your body actually unracks the bar. This is an open grip. Your thumbs are not wrapped around the bar at the beginning.
Want to build great abs? Forget sit-ups. Want great biceps? Forget all those curls. Want a great chest? Forget the bench press. According to Chad, isolation movements are a waste of time. He's either nuts or a great visionary.