Only been "beat up" once though I've had several fights
And in this one case I was looking over my shoulder casually and someone just whacked me
And I got a subconjunctival hemorrhage and hyphema which is blood in the eyes and the eye whites and burst blood vessel, damaged muscle
But with some eyedrops and taking it easy, elevated sleep, I was good. If they had hit me straight it might not have even been a black eye. It was just a cheap shot.
Other times was like no injuries whatsoever but I almost died from a chokehold while someone else punched me. So I charged backwards on the guy and elbowed him and threw punches at the other guy. Nearly died. But no visible injuries.