The hormone DHEA is released during sexual activity. DHEA can help to strengthen the immune system, build bones, and improve cognition. (Pease, Barbara and Allan. Why Men Don’t Listen and Women Can’t Read Maps. p 198-200. NY: Broadway Books, 1998.)

An essential hormone produced by the adrenal glands. Known as the “vitality hormone” because of its anti-aging properties, it is the body’s natural antagonist of the glucocorticoid family of hormones that includes cortisol. Childre, Doc and Howard Martin. The HeartMath Solution. p 266-267. CA: Harper SF, 1999.)