Actual Importance of Body Language
We often see players walking around in pre match parades with the head held high, chest out , shoulders wide. They have that look of peacock strutting their stuff, they look much bigger than they actually are, and look ready for action. On the other hand we also see players looking nervous, with their head down, shoulders forward, weak handshake....etc
Well it turns out that there is a scientific reason as to why you should act like the former, and it is all to do with testosterone and cortisol.