Human sexuality is the capacity to have erotic experiences and responses. Human sexuality can also refer to the way someone is sexually attracted to another person, whether it is to the opposite sex (heterosexuality), to the same sex (homosexuality), to either sex (bisexuality), to all gender identities (pansexuality), or not being attracted to anyone in a sexual manner (asexuality). Human sexuality impacts cultural, political, legal, and philosophical aspects of life. It can refer to issues of morality, ethics, theology, spirituality, or religion. It is not, however, directly tied to gender. Some cultures have been described as sexually repressive.

Interest in sexual activity typically increases when an individual reaches puberty. Some researchers assume that sexual behavior is determined by genetics, and others assert that it is molded by the environment. This is the nature versus nurture debate, in which one can define nature as those behavioral traits that are due to innate characteristics, such as instincts and drives. The concept of nurture can be defined as the environmental factors or external stimuli that influence behavior, emotions, and thinking. Biological and physical differences include the human sexual response cycle among men and women.

The Masters and Johnson research team, composed of William H. Masters and Virginia E. Johnson, pioneered research into the nature of human sexual response and the diagnosis and treatment of sexual disorders and dysfunctions from 1957 until the 1990s. They are also the focus of a new television project called "Masters of Sex" being developed for Showtime based on the 2009 biography by author Thomas Maier. The Showtime pilot was shot in March 2012 in New York City and stars actors Michael Sheen and Lizzy Caplan.

The work of Masters and Johnson began in the Department of Obstetrics and Gynecology at Washington University in St. Louis and was continued at the independent not-for-profit research institution they founded in St. Louis in 1964, originally called the Reproductive Biology Research Foundation and renamed the Masters & Johnson Institute in 1978.

In the initial phase of Masters and Johnson's studies, from 1957 until 1965, they recorded some of the first laboratory data on the anatomy and physiology of human sexual response based on direct observation of 382 women and 312 men in what they conservatively estimated to be "10,000 complete cycles of sexual response." Their findings, particularly on the nature of female sexual arousal (for example, describing the mechanisms of vaginal lubrication and debunking the earlier widely-held notion that vaginal lubrication originated from the cervix) and orgasm (showing that the physiology of orgasmic response was identical whether stimulation was clitoral or vaginal, and proving that some women were capable of being multiorgasmic), dispelled many long standing misconceptions.

Chapter 14 is an American alternative metalcore rock band from Carlsbad, California currently consisting of vocalist Chad Ackerman (Destroy the Runner, As I Lay Dying, Austrian Death Machine), guitarist Tanner Sparks (Destroy the Runner), bassist Edwin Peraza, and Jonathan Knauer on drums.

Founded in 2003 by Ackerman and Sparks the band also consisted of drummer Mike Catalano (Chiodos, Destroy the Runner), guitarist Noah Slifka (In Fear and Faith) and bassist Eddie Hudson (Paper Mache). The band was unable to put together a full-length album but did complete two full U.S. tours and several demos without a label or financial backing.

After four years trying to land a record deal the band split up in 2007 when Ackerman and Sparks were offered the roles of vocalist and bassist for Destroy the Runner’s departing Kyle Setter and Jeremiah Crespo respectively. Noah Slifka went on to join In Fear and Faith the same year while Mike Catalano would join back up with Ackerman and Sparks in Destroy the Runner in 2008. Eddie Hudson moved on to play bass for the band Paper Mache. Chad explains what happened with Destroy The Runner and what Chapter 14 has for future plans