• Assume position on Back Extension machine
• Lower upper body until waist is bent 90 degrees
• Fire glutes to raise upper body until it’s in line with lower body
• Lower with control; repeat

Sets/Reps: 4x12-15

Sistrunk: Everyone does crunches, but they need to work their back to balance things out. This helps posture and prevents injury from the constant rotating baseball players do. Before the body moves, tighten your glutes—then bring your body up.