This is the simplest and most effective of the stretches for carpal tunnel syndrome. It moves your fingers through a wide range of motion quickly and forcefully. Most of the force is applied backward, against the fingers and joints. As a result, it stretches the tendons from the wrist to the fingertips
Begin by interlacing your fingers as in the picture on the left. Now rotate your palms and push them out and away from your chest. Hold this for 5 seconds. Then drop your hands and shake them out. Repeat once again.
When properly done, you should feel maximum stretching under your knuckles.