As previously stated, Humphrey had some very particular theories on the fundamentals of movement. Her theory of Fall and Recovery was the center point of all her movement. She described this as "The arc between two deaths." Moreover, this idea was based in the change in center of gravity, balance and recovery. Humphrey theorized that moving away from center should be followed by an equal adjustment to return to center to prevent a fall. The more dramatic the movement, the more dramatic the recovery should be.