I was thinking they were craving the adrenaline rush from pain. I was thinking about that because in Far Cry 3: Blood Dragon, when you're out of health and push the button for health, you stick a finger in the bullet hole in your arm. I wondered about that for a while and then realized it was to give yourself an adrenaline rush so you could boost your performance in a stressful situation. I saw that in the Mechanic: Resurrection movie as well. Jason Statham gets wounded in the leg and then punches the wound so he won't lag. I'm pretty sure I saw that in a Jason Bourne movie too.



