system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we hold onto our injuries after we get hurt (Holding your head after it hits something) ?
gpt
It is a natural reflex to prevent the injury area from receiving additional damage. Taking an injury to our limbs is less severe than to our torso or head.

Injuries are not additive but multiplicative. This means that injuries close together can cause much more complications than if they occur separately at different locations.