How To Do The Barbell Situp
To get the barbell into position, lay flat on the floor with your heels pressed into the ground and toes pointed toward the ceiling. Position the barbell on the floor over the top of your head, perform a pull over, and then extend your elbows to get it into position. The bar should be pointed directly at the ceiling.
With the bar pointed at the ceiling, begin to sit up. Do your best to not round your back on your way up. Keep your face toward the ceiling for the entirety of the rep. Get your torso vertical and your ears between your biceps. Then begin the eccentric. On your way back down, control your torso and the weight, and flex your abs.