Wouldn't you be able to move quicker and more freely if you're not carrying a ton of weight?
It seems like the dreads are weighing him down a bit, maybe with a cut, he could move a little more freely. I'm not sure, maybe the he keeps the hair on his head because it does some sort of Samson-ish like powers that make him a high motor energy guy, despite being a bit heavy to carry.
Magic or Physics, you be the judge.