Board Thread:Speculation House/@comment-25045079-20141009192433/@comment-3146930-20141009194213

I think in general, Aura acts as a full body energy shield like in the Halo games; there isn't necessarily a "weakest" spot in a person's Aura. However Aura in my opinion acts more like a buffer, being able to block damage to a certain extent. Jaune for example had a bruise under his eye after Cardin beat him up, then when fighting the Ursa his Aura-meter showed that it was low, but not gone. Also unless you can concentrate your Aura into one spot like Ren does, I'm sure any type of bladed weapon would be strong enough to bypass a person's Aura.

Anyway to the original point, I don't think the head is the weakest covered, but the head does contain something very important; the brain. American Football players train to push their bodies to the limit they wear padding to protect most of their body. However you are more likely to see a player get taken out after a hit to then head then you are a broken shoulder or rib cage. This isn't the result of helmets being weaker, only that a quick hit to the head can rattle the brain.