• This can be done by using a measurement tape to measure the penis circumference during an erection in the area that represents the midpoint of the penis length. If a measuirng tape is not available, use a piece of string. Place a knot near the end of the string. Wrap the string around the erect penis and hold the string adjacent to the knot. Place the string on a ruler by continuing to hold the string where first grasped and determine the length of the string from that grasping point to the knot. This will give you the circumference.
4 - Use a moisturizer on the penis before the exercises and it is preferred not to use soap and shampoo as these materials will lead to redness and irritation of the penis skin . If it stays for a long period of time, in addition to dry skin, and the occurrence of cracks, it is preferred to use the Intensive Care Vaseline instead of the ordinary Vaseline as it can stay on the skin for long period of time without irritating or damaging the skin of the penis.