Nyasa is often performed before or during pujas (acts of reverence), at the hands of a seer or by the individual who is chanting or meditating. There are different types of nyasa practice. Some of the most common are:
- Rishi nyasa
- Kara nyasa
- Matrika nyasa
- Sadanga nyasa
In some nyasa practices, a mantra from a book is considered ineffective. Instead, it is believed that the mantras should be produced by a rishi.
The relaxation, meditation and visualization exercises (also called yoga nidra) that are used at the end of a yoga practice -- and, during which, practitioners "place" efforts of relaxation on specific body parts -- originally stem from mental nyasa rituals.