Racquetball is a racquet sport usually played indoors in an enclosed court. Other variations of racquetball can be played on one, two, or three walled courts outdoors.Racquetball is an offshoot of squash, which is popular in the European countries. The racquets are shorter than tennis racquets and the ball is made of rubber. Racquetball is a fast and exciting game which has turned many players into hopeless, hardbodied addicts of the sport.Because of it's starting and stopping charactersitics, racquetball is not considered to be an "aerobic" sport by definition, although it definately can contain an element of aerobic exercise. Many pounds have been sweated away on the racquetball courts. It's a great addition to your diet plan.One more thing.. if someone on the court asks you if you want a donut, just say NO! (A donut is racquetball jive for a really big ball-shaped bruise.) We racquetball players wear our donuts proudly because it means we played someone who hits really hard..