The physiological mode of operation of  MaxCal  penis expanders

A body part increases in size or changes its shape by means of the formation of new body cells with the part. Regarding the male genitals this natural procedure ends at the age of 20 at the latest. If the penis is to be enlarged or straightened after this age, the penis tissue requires long-term stimulation with the capacity of stimulating further cell growth. 

For this, MaxCal  subjects the penis to a physical pulling force - which is why these apparatuses are also called " penis expanders " or penis stretchers.

Applicable areas for pressure and pulling forces to change the body

The organism of a human being will eventually adapt to long term mechanical stress inflicted by pressure or pulling forces by changing its shape. In order for an afflicted body part to change in size or shape, new cells have to fill in the affected area (example: penis enlargement by using an expander. This means that growth in the affected body part will occur and remain permanent after treatment.


Natural changes in body shape through pressure or pulling forces

A natural lengthening of body parts can be noticed with progressing age in the female breast. Because of the permanent pulling force of gravity on the tissue of the breast, it changes its shape and size ("sagging breasts"). The same is true for age related changes of the face: an increasingly sagging portion of the chin area or bags under the eyes are often the result of external forces on the cell tissue and the body’s reaction to them.


A natural expansion of the skin happens during pregnancy when the foetus exerts pressure against the inside of the stomach wall (pic. 3). The baby acts as an "internal expander" that stretches the skin and stimulates growth. The skin across the stomach usually remains slightly enlarged after the pregnancy and appears less tight than before the pregnancy.


Natural changes in body shape through pressure or pulling forces

For thousands of years, humans in various cultures have used pressure or pulling forces to permanently change their bodies. The warrior tribes of Mursi and Surma in southern Ethiopia achieve extensive deformations of soft tissue parts in lips and ears by using permanently attached pieces of jewellery. The jewellery acts like an expander due to its huge dimensions (pic. 4). The famous "Giraffe Women" of Mae Hong Son (Thailand) owe their popularity to extended cervical vertebrae. Their growth is achieved by rings around the neck that are worn permanently and push the head away from the shoulders (pic. 5).


The physiological mode of operation of MaxCal penis expanders

Fields of application of elongation devices for body shaping

Plastic-cosmetic changes to the body by means of pressure and pulling forces

Penis enlargement with an expander


Cell growth regarding length and circumference due to MaxCal

Pic. 1

For several hours a day over several months, modern penis expander devices exert a pull of 400-1100 grams along the length of the penis. The body reacts to this stress by creating new cells inside the penis (new cells coloured pink). As cells grow three-dimensional in all directions, the penis grows in both length and thickness.

Penis straightening with an expander


Functional illustration of the process of straightening the penis with MaxCal

Pic. 2

A normal (non-pathological) curve in the penis is caused by an uneven number of cells in opposite sides of the penis. The side with fewer body cells (see illustration on the left) is shorter, causing a curve in the penis, especially during an erection.


By stretching the penis, the side that has fewer body cells experiences more stress, so new cells grow faster on that side than on the side with more body cells. The curve begins to even out (new cells coloured pink).

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Fields of application of elongation devices for body shaping

the body adapts to long-term pressure and pulling forces

for this, new body tissue will be formed

use for cultural, plastic-cosmetic purposes and medical purposes

Woman in late stages of pregnancy, viewed from the side


Pic. 3 

Natural growing of the skin during pregnancy through internal stretching.


Mursi warrior with body jewellery and plate rings


Pic. 4 

The Mursi tribe uses culturally inspired ornamental jewellery to expand soft tissue.


Giraffe neck woman with long neck from expanding jewellery


Pic. 5 

Growth enhancement of bones, muscle, and soft parts: striving for ideal beauty.



According to our experience the penis can become longer and thicker on the basis of an elongation treatment with MaxCal covering several months, because new body cells grow three-dimensionally in all directions from a physiological point of view if the devices are applied successfully. Long-term treatment may furthermore compensate  curvatures  of the penis. The  results  of long-term application are likely to be long-term.. 

If the devices are used for short periods of time, temporary elongations of the penis may result from stretching effects.

Furthermore, an elongation treatment may have the same effect on the cavernous body as weight training and may improve its  erection hardness  and the general  sexual stamina.

The physiological mode of operation of MaxCal ®  penis expanders

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