Guess what?I'm practising iron penis qigong, and don't be mistaken, coz it's not related to japanese iron penis festival, and it's a qigong, or kungfu or martial arts you may name. I got the materials from
Qigongpenis.com
This Iron Penis Qigong is only one piece of Kidney/Penis Qigong in ancient China.It's reported that many men have been cured of erectile dysfunction and premature ejaculation,and certainly most middle-aged people or elders are practising it to keep away from those sucking kidney diseases or male diseases, or just to improve the kidney function, while most young people in China tend to practise it so as to enlarge penis size or strengthen their potency after so much sexual activity or watching so much porn...
If one feels physically or mentally inadequate, you may as well go to Qigongpenis.com to practise it.
Good luck.see this youtube video:
YouTube - Old Chinese Practisers of IRON PENIS QIGONG