As tennis players we often get fatigue in our dominate arm while playing, drilling or taking a lesson. One trick that I learned over 40 years ago was to use the opposite hand, which in my case would be my left one.
The opposite hand allows us to give our dominate hand a “breather” in between points and strokes. It will also help you become more balanced on the court. If you would like to learn more about how using your opposite hand can help your game grow, feel free to stop by the courts and ask. I would love to help!