The press is the fourth Strength Performance Level exercise. This exercise demands not only great upper body strength, but also great stability through the torso and shoulders. The press is to be performed with no leg movement and a straight back. Usually, the limiting factor is the ability to stabilize the torso, so the powerful deltoids and upper trapezious muscles have a solid base to pull against. Often, you see people hyperextend their spine to gain a mechanical advantage with this exercise.
Liz performs a Level 2 press, below.