Ha-du-du, also known as Kabaddi, is a popular sport in Bangladesh that has its roots in ancient Indian history. The game involves two teams of seven players each, who take turns sending a "raider" into the opposing team's half to tag as many opponents as possible before returning to their own half. The opposing team tries to stop the raider by tackling or holding him, while the raider tries to break free and return to his own half without getting caught.
The game is played on a rectangular field that is about 12.5 meters by 10 meters. The field is divided into two halves by a midline, and each team has its own half. At the center of the field, there is a line called the "balk line," and the raider must cross this line to score points.
To start the game, a coin is flipped, and the team that wins the toss sends a raider into the opposing team's half. The raider must chant "ha-du-du" continuously while in the opposing half to show that he is not holding his breath, and then tag as many opponents as possible before returning to his own half. Each player he tags earns one point for his team.If the opposing team manages to tackle or hold the raider before he can return to his own half, they earn a point and the raider is out for that round. If the raider manages to tag all seven opponents and return to his own half without getting caught, he earns a "lona" or an extra point for his team.
The game continues with each team taking turns sending a raider into the opposing half. The team with the most points at the end of the game wins.
Ha-du-du is a popular sport in Bangladesh, and it is played at both amateur and professional levels. It has also gained international recognition, and it is played in many countries around the world, including India, Pakistan, Iran, and Nepal.

