Vital energy (Prāṇa-shakti) is the vital life sustaining energy of both the individual body and the Universe.
There are five types in relation to a person:
- Energy for the activity of inhalation (prāṇa).
- Energy for the activity of exhalation and speech (udan).
- Energy for the activity of the stomach and intestines (saman).
- Energy for the voluntary and involuntary movements of the body (vyān).
- Energy for urination, excretion, ejaculation, childbirth, etc. (apan).