you need to learn to able to quickly change focus from far away to close up without hesitation so that you can effectively hit a tennis ball. breathe out, bend your knees while hugging them tight. we are a smoke free home, and no pets. great service, knowledgeable staff, fair prices. safe playing surface: no liquid or perspiration should be on the court prior to playing. and this is seven days a week. experience the thrills of six flags st. louis, where people of all ages will enjoy a day of fun-filled adventures. 