Originally Posted by The Smithsonian
Would you care to elaborate on that?
Links to articles and sources will be posted at the bottom. This is a bit long and full of science.
" The reason why cryotherapy, or the use of ice as treatment, works for improving flexibility is a bit confusing. The accepted theory is the reverse of what you might think. Essentially the cold will cause vasodilation, or the widening of your blood vessels. Vasodilation allows for greater blood flow and higher temperature inside the muscle. This has a soothing effect on the musculature, which in turn reduces its resistance to being stretched."
"When you apply ice to an area of your body, it does create vasoconstriction to the superficial blood vessels, or blood vessels near the surface of your skin. At the same time, it increases blood flow underneath the superficial area to prevent heat loss. This helps reduce a muscles resistance to stretching."
Results from study:
"We found differences in the responses among subject groups. Supine hamstring flexibility after stretching with ice was greater than both stretching with heat and stretching alone. Scores after stretching with heat and stretching alone were not different."
Conclusions from study:
"The results of our investigation suggest that the application of ice may provide enhanced short-term improvements in flexibility over heat or stretching alone. Further research is necessary to investigate the possible mechanisms for these improvements and to determine whether similar results can be obtained with other muscle groups."
So that’s a pretty long read if you are still here .This is not an anti heat or warm up thread. The penis is complicated beast. Heat has been working great for years. Heat works on the penis by softening the ligaments ,soft tissues, and collagen allowing easier deformation when we stretch, hang, pump, or extend our ligaments. But we ar talking about cold And muscles. So what are it’s effects and how does this relate?
The penis is full of smooth muscle and it what relaxes and expands to cause an erection to happen. Jelqs,clamping,pumping, Live types of girth work stretch and expand smooth muscle in the penis.
" Vasodilation refers to the widening of blood vessels.[1] It results from relaxation of smooth muscle cells within the vessel wall" relaxation of the smooth muscles is what allows erections to happen and the principal that Viagra works.
This means in short we should be able to get more and easier expansion with pumping in cold water due to the increase in vasodilation , and increased lack of resistance from the smooth muscle.
The other benefits are is that expanded soft tissue in the pump like ligaments from being heated would be quickly cooled down but held in an expanded state this in theory helping to cement the expansion.
Other benefits is that it helps with healing. If you are the type to do PE every day especially girth this might be extremely beneficial against fatigue and injuries.
Cold seems to help greatly with discoloration, due to the vasoconstriction on the skin, and it’s effects against brushing and swelling.
It has proven effective against lymph fluid build up by alternating hot and cold.
Cold on the testicles has proven to increase testosterone .
Icing Isn’t Just for Injuries: Cryotherapy Improves Flexibility - Breaking Muscle
Comparison of Stretching with Ice, Stretching with Heat, or Stretching Alone on Hamstring Flexibility - PMC
Vasodilation - Wikipedia