The penis contains three major chambers which fill with blood during an erection. There are two Corpora Cavernosa and one Corpus Spongiosum. The Corpora Cavernosa are the two bodies of erectile tissue on each side of the penis. The tip of the penis is called the glands and is continuous with the distal most portion of the Corpus Spongiosum. The glands changes in size accordingly with the penis during erection. These three chambers are surrounded by thin ligaments that prevent over distention of the chambers, and hence, the penis. In addition, fibrous extensions of these ligaments create a sheet that surround the penis and its chambers and are ultimately responsible for the "stiffness" of erection when filled. Two more ligaments connect your penis to the pubic bone, these are suspendatory ligaments.

This means that, erect penis size is limited by two main factors. The first is the penile chamber size and the second is the extent to which the Corpora Cavernosa and surrounding fibrous sheets (fascia) can be stretched. The penile filling chambers (Corpora Cavernosa and the Corpus Spongiosum) are merely a collection of "inflatable" blood vessels which become engorged with blood during an erection. This occurs by the opening and closing of tiny "valves."

Normally, at rest, both valves are open and allow for the unimpeded flow of blood through the filling chambers. When you are sexually aroused, your brain releases a hormone causing blood to enter the penis and fill your erectile tissue (Corpora Cavernosa), because the entrance valves remain open and the exit valves begin to partially close. The cells in the Corpora Cavernosa are filled with blood, filling and distending the chambers and eventually enlarging the penis, until an erection is achieved.

Your penis is a unique physical organ just like other organs of the human body, such as skeletal muscle or brain. As with moth organs in the body, the more that they are used and conditioned, the better they work. Your penis needs to be trained in the same manner as a world class weight lifter would train, and what all penis enlargement programs do, is to train the penis, one way or another.

How Penis Enlargement Pills Work

The basis behind pills is that your penis needs to be trained in the same manner as a world class weight lifter would train. There is no way they could be as big and strong as they are without the use of supplements. These supplements are what pills provide. One thing to remember though, is not all pills are the same. There are a lot of people selling penis pills from their basement. They buy pills cheap and resell them. They offer next to no support, and usually make extra money of shipping them. These products aren't reviewed here, as they are usually just re-labeled products from one of the the products here. The same thing goes for Penis Exercise sites, some companies just release the same material under multiple domains.

The supplements that are found in the pills vary from product to product, but all products claim to do some or all of the following: