Crossfit good or bad for Tennis?

This is a question that I get asked a lot. Whether it’s good to do crossfit to get in shape for tennis or better off just to do cardio?
Lifting weights in my opinion does help give you more power and more strength for your tennis game. However, it has to be done right. We are in the gym not to become huge and super muscular; we are there to build muscles that help us for example serve better; move better in a lateral movement, hit a more powerful backhand through generating more power from the hips and core.
The key is to mix a lot of reps with heavy weight every once in a while to gain both endurance to the muscle and build more mass. This way you will get more in shape and become lean and mean. Remember you shouldn’t lift heavy all the time; it might give you a nice bod however for tennis you need to be light and quick. So the lean and mean process is the best approach.
Some of the useful exercises for legs are leg press, leg curls, barbel squats and hack squats.
Let me know if you have any questions.