Your movement on the tennis court is often just as important as your stroke. We never want to take focus off of the ball, but making a few simple adjustments in how you approach your shots could make a huge difference in your stamina and power. Feel free to ask questions in the comment section below!
Also, check out this video of Roger Federer's foot work in slow motion. Though you can't always be in perfect position, make it your goal to get your momentum behind the ball as you follow through (his last shot is a perfect example!).