We are orgasmic beings.
Tantra is built on the idea that our sexual energy is what connects us to the world. Expanding on the concept that our body has several energy centers called chakras, our sex center mirrors our spiritual center and grounds us to the world. As such, tantra is about the expansion of consciousness and vitality through the channeling of our sexual energy. This may seem a bit exotic but if you are curious to experiment with your sexuality and be curious about your body and its sexual potential, tantra is a very exciting practice to learn about.
Tantra teaches you not to waste sexual energy into only one orgasm but to bring the energy to where you feel you need the energy, to your other energy centers (chakras). As you experience an orgasm, you bring it up to your body, and build a multi-orgasm response that is to be felt in your whole body.
Through breathing, you anchor yourself into the moment and into your body sensations. Then you guide your sexual energy through your body. As you do, you expand your consciousness, and feel balanced and fulfilled on your own. It is both a physical, and spiritual experience to undergo.