Sex is essentially a physical act, the embodiment of intimacy. You need your body for its accomplishment and the better shape your in the more fun you can have. Libido stays stronger as you age if you maintain good health and take care of your body. No maintenance of the body and rust accumulates and in the words of Paul Simon, "the tools of love wear down." If you don't take good care of yourself, become overweight or seriously de-conditioned: A. you will reduce your attractiveness to your partner and libido will diminish, and B. The physical act of the sex itself will become more difficult from just a bio-mechanical point of view. So get to the gym and practice healthy nutrition.

6. Great sex, like revenge, is a dish best served up cold.

Here's a good tip: avoid having sex in the heat of the moment of hurt, pain, conflict, or preoccupation. In order to have "makeup sex," some amount of repair needs to happen so you both can enjoy each other free of lingering resentments and anger. Cultivating a good sex life, as has been suggested, follows from mindfully practicing intimacy as an ongoing moment-by-moment experience. If you are feeling good about your relationship and communicate, share your self with your partner on a thinking a feeling level and can repair disharmony, finding the "gear" of sexual expression simply and naturally follows. It takes the conscious awareness to stop the parallel working/practical management, aide-by-side living to pause, face each other, and take the moment to say, "I love you and would like to make love to you."