Urologist, Dr. Aaron Spitz discusses his book: The Penis Book: A Doctor's Complete Guide to the Penis. He shares information on the penis, the testicles, the anatomy of each part of the penis, how it all works together. How ejaculation occurs, pre-ejaculation, delayed- ejaculation, no ejaculation, its causes, medications that can be taken, exercises that can also be done to rectify the condition, how pornography affects ejaculation, and sex toys and other things that can be used to reverse conditions and etc.