IRL when you are in a self defence situation, you are already laying on the floor bleeding profusely and/or knocked out, I’m talking from personal experience, most of the time you get sucker punched or/and jumped on or/and punched in the back of the head or/and assaulters have weapons, so unless you’re heavily trained, when self defence situation happens you’re not gonna protect yourself, as Mike Tyson said, everyone have a plan before they got punched in the mouth, so unless you can act on trained “instincts” you gonna get stomped on the head