Diseases that affect the skin can be of concern to both affected swimmers and those who have to share pools with them. Molluscum contagiosum is a viral infection that causes bumps to appear on the body. They are usually flesh colored, and may occur in groups or singly.

The skills of softball — running, swinging, fielding and throwing — require a coordinated effort from numerous muscles throughout your body.

Swimming after childbirth helps you lose weight and restore muscle tone. It also boosts your strength and energy, which may be sapped after your pregnancy and delivery. Swimming is particularly beneficial because it works your upper and lower body and your core.

Unlike chlorinated pools that use chlorine tablets to keep the water clean, saltwater pools use dissolved salt and a chlorinator unit. As a result, saltwater pools usually contain fewer chemicals than chlorinated ones.

Yellow and red cards are part of the disciplinary system in soccer games at all levels. The yellow card is given for minor offenses and deemed a first warning. The red card is given for more serious incidents or for repeatedly bad behavior.

High school districts throughout the country are free to set soccer season at their discretion, typically in line with state high school athletic associations. Traditionally, though, soccer is a fall sport for both boys and girls, although certain states move girls’ soccer to spring.

In volleyball, a team of six players works together to return the ball to the opposing team’s side of the net in three hits or fewer. Players may contact the ball with any part of the body during a hit, but if they violate other rules about playing the ball, they risk losing points for their team.

If you've purchased a bike with a Shimano SIS shift system -- which stands for Shimano Indexing System -- you may find yourself confused as to how the shifts work. The system features a large and small shift lever mounted on the left and right handlebars and comes in both 7-speed and 10-speed.

During a soccer match, the number of offensive and defensive players on the field varies depending on the age of the players. While adults play with the standard number per team, the US Youth Soccer recommends that children younger than age 12 play "small-sided games"

Carly Patterson was 16 years old when she won the all-around for women’s artistic gymnastics at the 2004 Athens Olympics. Paul Hamm was 21 when he won the all-around for men’s artistic gymnastics in Athens. Elite gymnasts begin the sport at very young ages because their bodies peak so early.

The purpose of bag gloves is to protect the hands during hard workouts on a heavy bag. A variety of bag gloves are available. Each protect the hand in a different way. They range from simple covers that protect against scuffs to specially engineered gloves that support the structure of the hand and wrist.

The position at which a soccer player becomes a specialist can often be determined by his physical height and stature. However, this is not always the case. A player who is strong and powerful will have different strengths and weaknesses compared to a player shorter in stature but also fast and nimble on his feet.