Throwing a punch is a complex series of movements that begins in your feet and ends with your knuckles striking a target. Boxing uses every muscle in your body but some are more active than others. The most active muscles are the ones that will become stronger as a result of regular boxing workouts.

Swimming offers many benefits as a full-body exercise. Every stroke uses multiple large muscle groups in your upper and lower extremities while placing far less stress on your joints than land-based exercises.

Participating in sports encourages physical activity, improves mental health and teaches teamwork. But, some people might think gender-segregated sports teams send the wrong message to kids by keeping boys and girls separate.

In swimming competition, the 500-yard freestyle event is commonly called "the 500" or "the 500 free." It can be grueling, consisting of 20 lengths of a 25-yard pool. Focusing on a few elements of the 500 can help you improve your performance.

Video analysis, a commonly used tool in modern sports, can provide a training boost for individual and team competitions. Coaches and trainers analyze video from live action and training exercises, and the results of their careful analyses provide helpful feedback for the athletes.

The rules in Little League baseball generally mirror those of Major League Baseball. A few, however, have been adapted to better serve the needs of youngsters. The rules governing stealing bases are a good example. You can steal bases in Little League, but only after a pitch reaches the hitter.

Soccer and basketball are played at high schools and colleges throughout the United States and the world, not to mention on park and school playgrounds and professionally.

The first Ironman triathlon was held in Hawaii in 1978, and only 15 athletes started the ultimate test of human endurance. Today, there are hundreds of thousands of triathletes competing in Ironman triathlons all around the world.

Tennis is a lifelong sport, which provides many advantages and benefits for players of all ages. Along with physical, psychological and social benefits, however, come a few disadvantages -- injuries and expenses.

Participation in competitive sports has long been a staple of high school culture. Not only does it help kids stay in shape, learn focus and socialize but it also teaches them about working under pressure. Competition is about challenging yourself to improve.

Dreams of multimillion-dollar contracts, Olympic glory and college scholarships have many parents pushing their children harder than ever to play sports. Kids are being entered in sports leagues at younger ages; some are forced to participate year-round in the hopes of creating the next superstar.

Soccer requires quick feet and agility. During games, you not only have to run up and down the expansive field to cover as much ground as possible, but you rely heavily on short, explosive movements and acceleration to beat defenders. Quick feet will also help you dribble the ball, pass and shoot.