Relax into your serve
Staying relaxed is essential in tennis and is especially important while serving. Breathe deeply while preparing to serve and exhale completely while concentrating on your target. A good way to relax is to drop your shoulders, making sure that they are low and not tense. Stay relaxed throughout the serve until you make contact with the ball. This way, your arm speed will be very fast without straining or hurting yourself or missing a serve.