Tug of war is a sport that pits two teams against each other in a test of strength: teams pull on opposite ends of a rope, with the goal being to bring the rope a certain distance in one direction against the force of the opposing team's pull. Tug of war originally meant "the decisive contest; the real struggle or tussle; a severe contest for supremacy". Only in the 19th century was it used as a term for an athletic contest between two teams who haul at the opposite ends of a rope.

Much more than a summer camp event, tug of war is the ultimate team sport. On one side of the tug of war rope, eight pullers pull against another team of eight – one person goes down the entire team falls. There is more than meets the eye when it comes to one of the oldest competitive events in the world. The sport requires a sound centre of gravity along with upper and lower body strength. The legs, being the strongest muscles in the body, are used to generate force. Tug of war athletes are trained to transfer the power generated in their lower extremities through their arms and hands. Plus, a rope pull requires mental concentration as much as physical strength.

The sport is played almost in every country in the world. However, a few countries have set up a national body to govern the sport. Most of these national bodies are associated then with the International governing body call TWIF which stands for The Tug of War International Federation.

More Info: en.wikipedia.org