The Naked Coach with instruction to improve your erection quality.
Suitable for all ages and all levels of erection and erectile dysfunction.
Blood flow is really important because maximum blood flow into the penis means less out!
As more blood that flows in veins become compressed - blood coming out is restricted - pressure builds and builds!
As pressure continues to rise up and up (and up) the penis gets more and more swollen and more throbbing
...which I guess is what you want?
What will help maximum blood flow are many things such as exercise, diet but particularly happiness and relaxation.