While most professional basketball players come from traditional college hoops powers, more than a few were largely overlooked coming out of high school, ending up proving their abilities at a smaller school. The lesson here: Even in the age of non-stop media coverage and the Web, some great players do go overlooked.

Although soccer requires running, it is not considered an aerobic sport. The American Council on Exercise says that because soccer requires many starts and stops, your body functions at an anaerobic level, meaning without oxygen.

Gymnastics puts such an incredible demand on the body, it's important to plan your workouts in accordance with your gymnastic goals. Strength training is vital -- Olympic gymnast Alicia Sacramone devotes an hour each day to outside practice.

Football positions each have different responsibilities. Whether you are a quarterback, running back, receiver, defensive lineman or linebacker, by the time you reach high school, each position requires a certain body type and skill set.

A baseball game often goes on regardless of the weather. Thunderstorms and torrential downpours are enough to delay, cancel or postpone a baseball game. However, most baseball games continue in the presence of light rain. As a result, the glove you worked hard to break in may get wet.

The javelin throw is one of the few throwing field events in athletics competitions. Unlike the shot put or hammer toss, javelin throwing requires as much flexibility and speed as it does brute strength.

You can ride a bike wearing an old pair of sneakers, but cycling shoes can improve your performance. Cycling shoes attach to the pedals of the bike via cleats on the bottom of the shoe. Known as clipping in, this attachment allows a rider to make efficient use of the leg muscles in the upward and downward pedal stroke.

Soccer fields feature two distinct boxes in front of the net. The large box is the penalty area -- a critical area where the defending team can be penalized with a penalty kick for certain fouls.

Amateur boxing is divided into four weight classes -- featherweight, lightweight, middleweight and heavyweight. With the exception of heavyweight which has no limit, each class has a weight limit range.

Setting a lineup in softball can be instrumental in the outcome of any game. Because your team is likely full of players of varying abilities, a successful lineup has to blend players who hit for average, those with power and those with speed.

The touchback rule only applies to American football. Touchbacks occur in the end zone and result in the offensive team beginning play from their 20 yard line. The NFL rulebook explains that a touchback occurs when the ball's momentum, created by the opponent, carries it onto or inside the goal line, where it becomes "

Football players must undergo a workout regimen that includes various types of training: weight, speed, conditioning, agility and flexibility. These workouts keep football players in top physical shape throughout the season, increasing strength, size, stamina, speed and quickness.