The Mouse Trap - You Can't Catch a Raccoon.

Bob Greene says he has invented a better mouse trap. He used a nail bent to stop the kill mechanism so that it would simply pull a string with a pencil attached to it and the door would slam shut, which was spring loaded. A lot of times when people want to get muscular, they think, "Oh, I'll just do dumbbell curls or barbells" You can't. There are no natural movements that only use the biceps.