Why do we have hair?

[Blakwngbrd]

This is extremely entertaining guys The funny thing is that it really does act as a heatsink for your brain...only it's kind of backwards, since the idea with hair is to keep the heat IN when it's cold out...

 

[bigredguy]

on you head its to prevent heat-loss, much of the other deal with sweat, insulataion, or shade.

 

[woodly6]

Its a sidious pact made with god by shampoo and hairbrush companies to stay in business.