This is a picture from my brother's birthday party. I don't know why, but my cousins started arm wrestling all of a sudden. This actually involves physics. Arm wrestling all depends on torque. By definition, torque is "that whcih produces or tends to produce rotation". Torque is affected by the amount of force applied to an object to make it turn about an axis of rotation. In arm wrestling, the axis of rotation is the elbow. The amount of torque generated also depends on the distance between the axis of rotation and the place where force is being applied. Torque increases when the force and the distance increases. If you bend your wrist in arm wrestling, you shorten the distance between the hand and the elbow, thereby making it harder for your opponent to create a large amount of torque. I can't remember who won this match, but the face my cousin is making is really funny!