Although the task of chipping may not seem like a highly athletic activity, the more fit and athletic you are the smoother and more accurate you can chip.
In order to chip correctly, you need to bend from your hip sockets and hold your spine angle throughout the stroke. If your core is weak and inflexible, then you will inevitably stand up through the shot and end up flipping at the ball with the wrists, without much control. When your core is strong and flexible, you will be able to maintain your spine angle and control the distance with your body rotation-a much more reliable method of chipping than trying to scoop or flip the club with your hands.