RichRuff Training Exercise of the Week: Barbell Russian Twist

I love it when I see functional trainers having their healthy clients perform all their "core" training from the floor, lying on their back, moving up and moving down. Seems like a bit of a contradiction, right? But what if we take that same client and put them in a standing position? The closer we get to a standing position while performing "core" work, the more functional or purposeful an exercise will become, right? Bring on the Barbell Russian Twist.
The set up to this exercise is going to be nearly the same as last week's. Wedge one end of a barbell into a corner and get underneath the opposite end. Grasp the bar with both hands and extend your arms out in front. Your hands should be a bit above eye level. From this position, you're going to drop the bar towards one hip, keeping your arms extended and eyes straight ahead. The rotation should come from the thoracic spine, not your lumbar spine, so focus on keeping your belly button straight ahead also. From the bottom position, rotate back to the starting position and then rotate to the other side.