Mark this as one reason to never ever even think about jumping out of a plane again. That's if you ever had the thoughts of it.

The Telegraph got their hands of footage from the helmet cam of James Lee, a 25-year-old skydiver who was jumping out of a plane in the UK and mere seconds after taking the leap was hit on the back of the head by another diver and knocked out.

Miraculously two other divers noticed something was up and managed to deploy his chute for him but it still wasn't until his canopy was open and he was making his final descent that Lee came to and made his landing, completely oblivious to his near-fatal accident. But now he has this camera footage to terrify his family with for the rest of his life.