Become a straight A student with this crash course that teaches you fact from fiction when it comes to nutrition, exercise, and total well-being.
Dr. Oz goes public with your private questions about the penis. Learn what's normal, what's not, and what you don't know about men's sexual health. Here, Dr. Oz and the world's leading sex experts tackle a tough question: Does the penis get smaller with age?
Click here to watch Part 2.
Click here to watch Part 3.
Click here to take Dr. Oz's Sex Quiz. What's your bedroom IQ?