A shoulder tackle is a common technique used in contact sports like football and rugby. It involves a player using their shoulder to make contact with an opponent, typically to stop their progress or gain possession of the ball. The player executing the tackle approaches the opponent and lowers their body, leading with the shoulder to create a strong impact. This technique is essential for defensive players, as it allows them to effectively halt the offensive player's movement. Proper form is crucial to ensure safety and effectiveness, as improper tackling can lead to injuries for both the tackler and the tackled player.