A truly superb sex life requires not only vertical growth that increases sexual proficiency but also horizontal growth that widens the spectrum of sexual interactions. Horizontal growth can include increasing the number of positions you and your partner have to choose from. Not much is needed to widen the spectrum. The imagination to think of various positions, the spirit of challenge to practice them, and a healthy body are enough. Don't be frustrated if you run into the limits of your imagination. That’s why we have the ancient wisdom of the Kama Sutra.