Rebirth can refer to a number of different concepts within spirituality, depending on the school of thought. Hinduism and Buddhism, which both share roots with yogic philosophy, teach about rebirth.
In Hinduism, rebirth, or reincarnation, is a central tenet of the religious teachings. It refers to the idea that the spirit can begin a new life after the death of its physical body, in another body. This may be a human or an animal body.
In Buddhism, rebirth is the idea that when a being dies, this event is the catalyst for the creation of a new aggregation of consciousness. The new being is neither identical nor completely dissimilar to the previous life, but rather they form a continuous stream of consciousness.