When cyclists ride fast they form a "paceline". Each cyclist, except the first, is drafting behind another one. In order to ride very fast, a team of some skilled cyclists may form the "Belgian tourniquet". Successively, each cyclist leads the group. Drafting can be "cooperative": several competitors take turns in the lead position (which requires the most effort and energy consumption). It can also be "competitive" or "tactical": one competitor will try to stay closely behind another, leaving the follower with more energy for a break-away push to the finish line.