Celibacy (Brahmacharya) can be defined as an act of abstaining from indulging in any sexual activity, speaking or imagining about sex, as well as touching others with the intent of sex. Such a person is called celibate (Brahmachari). In general, a person who is not married is often referred to as celibate.

Brahmacharya has been given great importance in Hinduism. Lord Hanuman and Lord Dattatreya, who are important deities of Hindus, are celibate and are believed to possess tremendous spiritual powers. Most of the Hindu sages are celibate. It is believed that celibacy increases spiritual power and is the key to advancing oneself in the spiritual world. Hanuman is the symbol of celibacy in India. It is believed that it also increases physical power.

Persons who are not married are supposed to observe celibacy. Brahmacharya-Ashrama is the first stage of human life according to Hinduism. Generally, this is a learning phase of life (student life).

Strict celibacy is very difficult to maintain for an ordinary man. Hence, in general, only ascetics observe it.