C H A K R A S
Chakra is any center of subtle body believed to be psychic-energy centers in the esoteric traditions of Indian Religions. The concept is found particularly in the tantric traditions of Hinduism, Buddhism and Jainism. They are conceived as an energy focal point, bodily functions or psychic node in the subtle body. The word Chakra (चक्र) derives from the Sanskrit word meaning "wheel," as well as "circle" and "cycle".
The more common and most studied esoteric system incorporates seven major chakras, which are arranged vertically along the axial channel. The Chakras are considered as meditation aids, wherein the yogi progresses from lower located Chakras to the highest Chakra blossoming in the crown of the head reflecting the journey of spiritual ascent.
Here I've tried to illustrate those seven chakras of the human body according to their nature and characteristics.