KUNGFUROCK

The most powerful kungfu practiced by shaolin practitioner is called qigong. Qigong produce a type of energy called qi. Once you can control the qi and concentrate the qi on your certain part of your body, you can produce enormous power. As you can see in the video, shaolin kungfu practitioner can have iron head, iron body, iron neck, iron fist or even iron arm that are extremely powerful. They can break brick with head, sustain spear using their throat and stomach, and penis can pull a truck.

See related article:
Iron penis qigong
Iron head qigong
Iron body qigong