I hope you are having an amazing day wherever you are...here in LA it is sunny and in the 70s- another beauty!
Check out the tennis training video below. It is one of many super short tennis workouts I plan to post showcasing highly effective 12 minute total body tennis fitness circuits you can do when you are short on time. The moves you will see are compound exercises...they target multiple muscles and joints simultaneously...providing more bang for your buck when time is of the essence. In this one, you'll hit your legs, chest, shoulders, back, abs, and core.
Consider doing these quick workouts 3 times a week, with a day in between sessions.