Tennis is a fast-paced sport for two or four players. It can be played either outdoors or indoors. Tennis players use a stringed racket to hit a ball over a net. They score points by hitting the ball out of the opponent’s reach. The racket sport traditionally named lawn tennis, invented in Birmingham, England now commonly known simply as tennis, is the direct descendant of what is now denoted real tennis or royal tennis, which continues to be played today as a separate sport with more complex rules. Tennis can be played as a sport or as a recreational activity with friends and family. Either way, playing tennis is a good sport to maintain your health, fitness, strength and agility. It has been calculated that an hour-long game of singles tennis burns around 600 calories for men and 420 calories for women. Tennis engages your mind and body at the same time, unlike say a workout in the gym. Tennis players are more confident, healthier, less stressed and more socially interactive. This tends to make them happier than most other sportsmen and women as the social side of tennis is definitely a huge benefit. Tennis can be played for life because it is a low-impact and non-contact sport. It is a global sport. Tennis is played throughout the world, in every country and is now one of the most widely played sports in the world. It is also among the most lucrative. Tennis is a game played with two opposing players (singles) or pairs of players (doubles) using tautly strung rackets to hit a ball of specified size, weight, and bounce over a net on a rectangular court. Most people would agree that Wimbledon is the most prestigious tennis tournament. Of the four grand slam tournaments in professional tennis (Australian Open, French Open, Wimbledon, and the US Open), Wimbledon always seems to attract the most attention.