Re: what's the point of hair...
Originally posted by JLred
i had a dream i posted this question.... 馃槙
To keep the brain warm...the brain is a very blood hungry organ. We evolved with humongo sized brains...relative to the rest of our body, AND these brains eat up about 20% of all of our body'sygen despite the fact that they are like a 20th of our total body mass. (I can't remember if it is a 20th or not...sources?)
Keep in mind...we evolved through an ice age and those adapted best to their environment survived. If your brain gets cold...you get stupid and die.