Be wary of these common and ineffective penis enlargement techniques, some of which can result in serious damage:
* Manual squeezing exercises (jelquing). These exercises, which use a hand-over-hand motion to push blood from the base to the head of a semierect penis, are supposed to be performed on a regular basis. Although this technique may be safer than other methods, it can lead to scar formation, pain and disfigurement. There are no scientific studies that indicate this technique is effective at increasing penis size.
* Stretching with weights. This technique, which involves wearing weights on the flaccid penis, may cause permanent penile damage. There's no scientific evidence that this technique increases penis size.
http://www.mayoclinic.com/health/penis/MC00026
* Manual squeezing exercises (jelquing). These exercises, which use a hand-over-hand motion to push blood from the base to the head of a semierect penis, are supposed to be performed on a regular basis. Although this technique may be safer than other methods, it can lead to scar formation, pain and disfigurement. There are no scientific studies that indicate this technique is effective at increasing penis size.
* Stretching with weights. This technique, which involves wearing weights on the flaccid penis, may cause permanent penile damage. There's no scientific evidence that this technique increases penis size.
http://www.mayoclinic.com/health/penis/MC00026