First create a starting line and ending line in the gym. After divvying up the class into equal teams, each team lines up in a straight row behind the starting point. Each player is lined up behind the other on their team. When you yell "go!" the last person at the back crawls through the legs of each person on their team to the front of the line. Then, that player yells "next" and the next person goes. This continues until the line keeps moving forward toward the finish line. The first team to have all players cross the finish wins!