Tantric believes that human life span is closely related to the strength of qi (Tantric qi should refer to energy, that is, chakras, not qi). The human body is made up of father's blood and mother's essence, that is, red and white, while human knowledge (the soul or the id that most people think) resides in the heart chakra. If the white dot rises above the head and the red dot falls to the dense place, then people can survive, and what separates the red, white and bright points is qi. If the gas is weak, then the bright red and white spots will begin to approach. When red, white and bright spots meet in the heart chakra, people will die. Longevity is a function of tantric yoga.

Tantric believes that human mind and body are in harmony (just like particle entanglement). A person's 72,000 troubles correspond to a person's 72,000 pulse knots. If people can open the pulse knot, they will relieve a kind of trouble. Correspondingly, when people relieve a kind of trouble, they will open a pulse knot. Tantric yoga is to get rid of this kind of trouble by practicing Qi and understanding the pulse knot of the human body. Relieving troubles is another function of tantric yoga.

In fact, tantric yoga has many magical functions, but the most secular functions are mainly these two.