|Sure you feel OK now, Jim.|
Well, some scientists are looking at all the head injuries movie heroes sustain and decided to get real.
Assaults often result in injuries to the brain, which sort of sloshes abruptly in the skull, loosening all connections and impairing the brain matter itself. If the skull casing gets "broken", a blood clot can form.
A real human might vomit, suffer from dizziness or blurred vision or slurred speech. Jumping in a Ferarri and driving off would be next to impossible. A limb could be weakened. His sense of smell could be affected.
The head injury could even--gasp--render our hero impotent. Aw, disappointed Bond Girls.
Emotions could be affected if the amygdala is affected. Instead of cool, Bond could run hot and aggressive.
Bond could even lose his job. Many victims of traumatic brain injury do. No more flirting with Moneypenny?
Even if you are not a spy, fighting or sustaining about a thousand blows to your football helmet could put a dent in your life, too. A brain is a terrible thing to waste.