Tennis is a game of skill and endurance.
It is also a game that requires you to be in top physical condition. Many personal trainers recommend tennis players strengthen their core abdominal muscles. This muscle group is used everyday for routine duties like carrying groceries, getting out of bed and picking up your children. It is also the core muscle group needed to reach for a drop shot or rip a ball down the court. Crunches and push-ups are good but you can also strengthen your abdominals by sucking in your stomach and hold that position for a minute or longer.