For time:
21 dumbbell thrusters*
400-meter run
18 dumbbell thrusters
400-meter run
15 dumbbell thrusters
400-meter run

*Use two dumbbells.

Stimulus and Strategy:
This is the first workout ever posted on CrossFit.com. Just as it was posted back in 2001, no weight is listed for the dumbbell thrusters. Instead, the instructions were to use a heavy weight and move as fast as possible. Twenty-five years later, this workout is still a “bear” and is a potent dose of fitness. Choose a weight for the dumbbells so you can complete your thrusters in 3 sets or fewer, and push the pace of each run