Have the players form a circle approximately 15 meters away from you. You stand in the middle of the circle.
Execution
Players start in their position in the circle and keep "jogging" on the spot. Call out "inward" and all players sprint towards you until they are about two meters away. Then they turn around and quickly sprint back to their position, where they remain in motion.
Call out "outward" and all players sprint away from you. When you call "back," all players return to their starting position in the circle.
Quality
Ensure that players are not standing flat-footed, but always on their toes. Players should be sweating profusely after this activity.
Progression
Add variations such as sit-ups, push-ups, jumping, high knees, or sprinting to the right or left while maintaining the circular formation.