Theoretically, you can hypothesize some of the implications of cold when dealing with Penis Enlargement. Since the tensile strength of collagen is directly related to, and varies greatly, at different temperatures, temperature can be used to advantage. Obviously it is well known that raising the temperature of the penis makes it more "pliable" and increases blood flow. I have experimented with very high heat, as have others in confirming this at least anecdotally, and that it does allow one to "stretch" or "expand" more and more as the temperature increases. (that the tensile strength of collagen weakens exponentially as the temperature rises is NOT disputed and is already known in science)
Similarly, cold, or decreasing the temperature increases the tensile strength of collagen. (again, this is just the chemical/physical properties of the collagen triple helix and is not in dispute) What some have attempted to do with this knowledge (although I have found no study to confirm or deny the practice) of cold is to "trap" the extended helixes in that state by quickly cooling the helixes before they can return to their original prestressed state. Theoretically, one could "stretch" the helix while in an elevated temperature given a particular force, and then rapidly cool said helix without removing the force. Think like freezing a stretched rubber band if you will. I guess the idea would to be to keep these elongated collagen fibers cool long enough in an extended state that additional peptides can bind into the increased "gaps" in the helix before it is allowed to return to its original size.
Rantings from the Lunatic,
Tom