Hard is good, harder is better — for your health, your libido, your life. Such is the provocative premise behind Dr. Steven Lamm's The Hardness Factor, a groundbreaking book that will change the way men live and love. The Hardness Factor asks, "can men be hard and in shape for sex their entire lives?" The answer is, absolutely. Here for the first time are scientific, evidence bases regimens — emphasizing nutrition, supplements, and exercise — to increase the erectile quality. After following The Hardness Factor, you will achieve optimal health and sexual fitness.