Do is an action-oriented word that implies taking action to achieve a desired result. It is often used to encourage someone to take action, or to remind someone to take action. It can also be used to express determination or commitment to a task.
From Wikipedia
Do-si-do, also spelled dosado, do-se-do, or dos-à-dos, is a dance move found in several forms of social dance, including square dance, contra dance, English country dance, and Scottish country dance. The move involves two dancers approaching each other, passing around one another back-to-back, and returning to their original positions without turning to face each other during the maneuver. It requires coordination and spatial awareness between partners.