While basketball is played by people of all ages, there are some rule differences for young players. Players age 11 and older generally play on a regulation-sized court. Rules for younger players often allow them to play on court with a shorter basket and a free throw line that is closer than regulation distance.

Everything in basketball revolves around time. The whole point of the game is to see who can score more points within a certain interval. Understanding the clock rules is essential no matter what level of basketball you're playing, coaching or watching.

It is perhaps more accurate to say that floating, rather than swimming, is easier in salt water. This is entirely due to the density of salt water in comparison to the density of outdoor fresh water or indoor pools. A swimmer's physiology also affects his ability to float in any form of water.

Americans love their sports and softball is no exception. It's a game for all ages and skill levels; but like any game, there are rules. Under the Amateur Softball Association rules, stealing bases depends on the age of the players and whether a team is playing fast pitch or slow pitch softball.

Only about 113,000 people worldwide earn their living playing soccer, and of those, only about 7,000 play in CONCACAF, the region including North and Central America and the Caribbean. Meanwhile, more than a quarter-billion people play soccer worldwide, including more than 44 million in CONCACAF.

Gymnastics is a sport involving the performance of various stunts and requires high levels of strength, flexibility, and endurance. Because of the highly involved tricks often associated with the sport, it has been most commonly taught in a traditional gymnastics studio under the guidance of a skilled coach.

Foot numbness when bicycling typically occurs when the nerves between the bones under the ball of the foot become compressed. Numbness usually develops on longer or more intense rides and can linger even after you stop exercising. Besides numbness, symptoms can include tingling, bruising and a burning sensation.

At 6 feet, you're a fairly tall guy. Selecting a bike that's correctly sized for your proportions is essential to being comfortable while you ride. A properly fitted bicycle reduces joint pain in your knees, soreness in your back and neck, and is much healthier for your body over long miles.

Nasal congestion following swimming is not uncommon. If you are swimming in a pool and experience nasal congestion, you may be sensitive to the chemicals added to keep the water clean.

Left-handed players are often at a premium in baseball. A manager or coach wants high-quality left-handed pitchers and power hitters, yet there are relatively few positions for left-handed players to occupy on the field.

Hurdling is one of the most demanding events in track and field. Hurdlers must strengthen and work on several different muscles in their training. Strength training for hurdlers generally focuses on exercises for the hip flexors, calves and lower back.

Often starting between the ages of 8 to 16, menstruation is a normal part of every girl’s life. During the menstrual cycle, a woman’s body expels blood and tissues that have accumulated along the walls of her uterus.