Kids are suppose to be active and in shape, but with all the play stations, x box's etc in nearly every house hold we are faced with a growing population of over weight children. Most exercises are boring and cant keep kids interested more than several minutes. Battle ropes and climbing ropes on the other hand are exercises that kids as young as 5 years old will have fun participating in. 

You cant take your kid to the gym, but you can take them in the back yard, park, beach etc and have a fun interactive work out with them with an inexpensive battle or climbing rope.