There are certain classic sports that are recognized and enjoyed by people around the world, including the likes of soccer, basketball, tennis and golf. There are also plenty of extreme, crazy sports which are sure to blow your mind. Adrenaline is an enormous part of what makes the sport so enjoyable, so it seems inevitable that people have gone in search of sports and activities that create the most adrenaline pumping action even if it may not be the safest activity.