MMA fighting, though I liked it much better back in the day when you could wear street clothes, stomp on a guy's face and spike them on their head. Only rules were a point deduction for hair pulling, biting, eye poke, groin attack and grabbing less than 4 fingers and maybe stabbing the guy and the parking lot before the fight. I can't think of a truer test of individual technique, strength, speed, stamina and toughness. You can't rely on your team mates, its up to you. Its nap,tap or snap!