The coital alignment technique (CAT). During conventional man-on-top intercourse, erections move almost horizontally. In 1988, New York sex researcher
Edward Eichel urged men to shift forward and to
one side so his chest covers one of her shoulders. With this change, erections move more up and down, and the pubic
bone at the
base of the penis makes more direct contact with the
clitoris. Several studies have shown that Eichel was correct. The CAT doesn’t guarantee women orgasms during man-on-top intercourse, and it’s no substitute for gentle, extended clitoral caresses by hand, mouth, or vibrator. But the CAT significantly improves most women’s ability to have orgasms during man-on-top intercourse