The stance of the defiant human male:

Zahavi:

"The stance of the defiant human male is well known to us all: a straight back, the chest thrown out, the shoulders back, chin up. This is a very inefficient and risky posture in which to enter hand-to-hand combat. The uptilted chin is exposed to blows; the erect body makes it difficult for the threatener to launch a surprise attack or to change position at all. It is the exact opposite of a boxer's or wrestler's stance in the ring: ready to attack or to avoid an attack, the boxer keeps his chin down, close to the chest, and his body coiled like a spring; he balances on the balls of his feet, on the alert, ready to seize the first opportunity. Of course, boxers cannot resolve the match by threats: both have already committed themselves to fight."