Their biggest weaknesses are their physical strength and their inability to quickly rebound after a vicious physical blow they were unable to magically block. This is because they are very limited in their ability to build up and strengthen their muscles, as their body is simply not made for it. So in battle, for example, sorcerers specialize in magical or long range combat. Though they are by no means frail, unable to defend themselves, or incapable of close range combat, their thin frames and smooth muscles are not built to handle the weight and stress of such physically-trying brutality. This is why their main physical defense when being attacked at close range is their nails, of which explains why their nails have evolved the way they have.