Ukraine

That's not how the human body works contrary to your comment. He was sapient the entire time the grenade went off in his face and was indeed suffering from extreme pain from his decision.

My dude, sapient is not medical terminology. There's a scale of consciousness utilized in medicine that goes from conscious and coherent all the way down to Coma.

Just because you are moving doesn't mean you are coherent enough to understand what's happening or even able to recognize that you are in pain.

Your brain is partitioned in a way where most of the physiology required to sustain life are located lower near the spinal cord. Ive had to treat more than my fair share of suicide attempts where the patient basically just destroys their frontal lobes. They are alive and able to move in some cases, but there's no pain.