Skipping comes so naturally to playing children, and it's a great fat burner for adults too!
Begin balanced on one foot and with your other leg raised towards your chest with knee bent.
Swing your arms in a running motion as you jump up and forward, pushing from your supporting leg and toes and lifting your raised knee even higher.
Land on your supporting leg and shift your weight to your other leg, performing the same movement from the other side. Alternate continuously.