Turning 50 can be one of the most powerful and positive sexual passages in a man's life," writes Barbara Keesling, a sexuality and psychotherapy educator. However, "the focus has to be on lovemaking, not erections - on partnership, not performance." After 50, men's sexual response is affected by the "Big 5": stimulation, circulation, lubrication, stress, and sleep. Keesling teaches women (and men) how to understand how the "Big 5" affect sex, and specifically what to do about each of them. For example, anything that affects blood flow affects erections: temperature, time after eating, position, friction, gravity, and illness, to name just a few.

Keesling presents a series of exercises designed to keep your man "sexually fit, sexually focused, and sexually fabulous for decades". Some are performed during lovemaking; others are completely separate from sex. Some are done by the woman on the man; others by the man on his own. She also offers her 21 "home remedies" for maximizing sexual enjoyment.

Keesling stresses that mental attitudes - yours and his - are as important as the physical exercises. Understanding his aging process will help you accept his changes and adapt your lovemaking so that it's still exciting, loving, and satisfying, even though it may be quite different. Keesling isn't just talking about sex - she's talking about intimacy, acceptance, and love. And those can be powerful aphrodisiacs.