According to the website of one such product, the safe application of traction encourages tissue cells to divide and multiply, a process called cytokinesis. Over time and with great effort this will lead to tissue growth. The FDA considers these low-risk devices (Class 1) and so provides only general controls intended to be followed by manufacturers.
I have always been a grower and not a shower. The truth is I am decent sized. But I have never been really big just hangin if you know what I mean. Sometimes it's like turtle syndrome. The truth is that I don't notice a big difference once I am completely erect. I am already over 7 inches. But when I am in the flacid state the gains are friggin dramatic for me. Like people are saying it is a little slow. I didn't see it until around the 2nd month. And I followed the routine on here that says to play with your self after you take it.