General Biology

Physical fitness refers to the ability of your body systems to work together efficiently to allow you to be healthy and perform activities of daily living. Being efficient means doing daily activities with the least effort possible. Physical fitness is a state of health and well-being and, more specifically, the ability to perform aspects of sports, occupations and daily activities. Physical fitness is generally achieved through proper nutrition, moderate-vigorous physical exercise, and sufficient rest along with a formal recovery plan

Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic sports, with varied distance events in butterfly, backstroke, breaststroke, freestyle, and individual medley. In addition to these individual events, four swimmers can take part in either a freestyle or medley relay. A medley relay consists of four swimmers who will each swim a different stroke, ordered as backstroke, breaststroke, butterfly and freestyle. Swimming each stroke requires a set of specific techniques; in competition, there are distinct regulations concerning the acceptable form for each individual stroke. There are also regulations on what types of swimsuits, caps, jewelry and injury tape that are allowed at competitions. Although it is possible for competitive swimmers to incur several injuries from the sport, such as tendinitis in the shoulders or knees, there are also multiple health benefits associated with the sport.

Association football, more commonly known as simply football or soccer (a shortening of the word "association"), is a team sport played with a spherical ball between two teams of 11 players. It is played by approximately 250 million players in over 200 countries and dependencies, making it the world's most popular sport. The game is played on a rectangular field called a pitch with a goal at each end. The object of the game is to outscore the opposition by moving the ball beyond the goal line into the opposing goal. The team with the higher number of goals wins the game. Football is played in accordance with a set of rules known as the Laws of the Game. The ball is 68–70 cm (27–28 in) in circumference and known as the football. The two teams each compete to get the ball into the other team's goal (between the posts and under the bar), thereby scoring a goal. Players are not allowed to touch the ball with hands or arms while it is in play, except for the goalkeepers within the penalty area. Other players mainly use their feet to strike or pass the ball, but may also use any other part of their body except the hands and the arms. The team that has scored more goals at the end of the game is the winner; if both teams have scored an equal number of goals either a draw is declared or the game goes into extra time or a penalty shootout depending on the format of the competition. Each team is led by a captain who has only one official responsibility as mandated by the Laws of the Game: to represent their team in the coin toss prior to kick-off or penalty kicks. Football is governed internationally by the International Federation of Association Football (FIFA; French: Fédération Internationale de Football Association), which organizes World Cups for both men and women every four years. The FIFA World Cup has taken place every four years since 1930 with the exception of 1942 and 1946 tournaments, which were cancelled due to World War II. Approximately 190–200 national teams compete in qualifying tournaments within the scope of continental confederations for a place in the finals. The finals tournament, which is held every four years, involves 32 national teams competing over a four-week period. It is the most prestigious football tournament in the world as well as the most widely viewed and followed sporting event in the world, exceeding the Olympic Games. The most prestigious competition in club football is the UEFA Champions League which attracts an extensive television audience throughout the world. The final of the tournament has been, in recent years, the most-watched annual sporting event in the world. The top five European leagues are the Premier League (England), La Liga (Spain), Bundesliga (Germany), Serie A (Italy), and Ligue 1 (France). The modern game traces its origins to 1863 when the Laws of the Game were originally codified in England by The Football Association