Have the group spread out in a large area. The leader gives one instructions (ie shake hands with someone) on "GO" everyone performs the task and then sits down.
The leader then gives the same instruction and then adds another. Everyone does that . Continue to add instructions until you reach ten.
-Shake hands with someone
-Lie down on your back and put your feet in the air
-Run around the leader
-Do a somersault
-Clap your hands five times
-Play leap frog over four other people
-Do a cartwheel
-Jump up and down 10 times