BIB's all day hanging routine was based on the idea of keeping the penis in a stretched position for as long as possible. He would start off for 2-3 sets with heavy loads to induce fatigue and then progressively, for however many sets he could get in, reduce the weight to where he would only be hanging 5 or so pounds. This is really a lot like wearing an [words=http://www.phallosan.com/shop/catalog/default.php?z=eNortjIxtVKyL0pNszWxMFcrSSxKTy2JL0hMT7U1UisoykyxtbBQSy4tLsnPjS8uKcrMS7dVsgZcMMpbEbo%2C]ADS[/words] where you achieve a level of fatigue and then maintain an extended position while in the "healing" process. It is possible to overstretch and get into the realm of tissue hardening, which is where you've pulled the tissue so hard that instead of growing more tissue the body reacts as if injured and works to harden the tissue as to prvent future injury. That's a big reason why you have to know and understand how your penis reacts to certain types of exercises.