Maybe a highly trained assassin (navy seal, black belt, etc.) might be able to, but not your typical person. Certainly not a kid who just turned 17.
http://spotmebro.com/how-to-kill-a-man-with-your-bare-hands/
The truth is, in order to effectively kill an opponent you must first render them unconscious. Strong fundamentals in traditional combat sports such as boxing, wrestling, muay thai, and jiu-jitsu are the key to victory in a mortal confrontation. There is no magic bullet, the fighter with greater technique, speed, power, and athleticism will almost always come out on top.
The real knowledge lies in something that wrestlers and judo practitioners have known for ages. The hard ground beneath your feet is actually the most abundant and devastating weapon. The most effective and efficient way to kill a man with your bare hands is by firmly grasping the skull of an unconscious opponent, and slamming the back of their head into hard ground multiple times. Several forceful slams will likely result in catastrophic brain damage and immediate death.
The most efficient lethal victory would look something like this:
* The victor lands a powerful snapping punch to the tip of their opponents chin rendering them unconscious.
* The victor mounts their opponent’s chest, firmly grasps the skull, and delivers 2-3 powerful slams of their opponents head on to hard ground.
* If the confrontation is taking place on soft ground such as grass, the most effective method would be to simply apply a blood choke on an unconscious opponent for 2-3 minutes.
