The chakra system (from Sanskrit cakra, "wheel" or "circle") originated in the Tantric traditions of India and was systematized in texts like the Sat-Chakra-Nirupana (sixteenth century CE), though earlier references appear in Upanishadic literature. In its classical form, it describes seven primary energy centers located along the spine: Muladhara at the base (associated with survival, earth, the color red), Svadhisthana at the sacrum (pleasure, water, orange), Manipura at the solar plexus (will, fire, yellow), Anahata at the heart (love, air, green), Vishuddha at the throat (expression, space, blue), Ajna between the eyebrows (perception, the "third eye," indigo), and Sahasrara at the crown (pure awareness, violet or white). The spiritual energy Kundalini is described as lying dormant at the base chakra, and yogic practice aims at awakening and raising this energy through the successive chakras toward the crown — a process associated with expanded awareness, transformation of personality, and ultimately liberation. The Chinese meridian system (經絡, jīngluò) maps a different but structurally parallel landscape: twelve primary channels corresponding to twelve organ systems, eight extraordinary vessels that regulate the primary channels, and a network of subsidiary channels creating a whole-body energy web. Qi flows through these channels in a daily cycle, each organ system having its period of peak activity.

The comparison between these two systems reveals both their differences and their points of convergence. The chakra system is primarily vertical, concerned with levels of consciousness and the ascending development of awareness; the meridian system is primarily horizontal and circulatory, concerned with the dynamic balance of different functional energies across the whole organism. The chakra system places particular emphasis on specific psychological and spiritual qualities associated with each center; the meridian system emphasizes the functional relationships between organ systems and the emotional resonances of imbalance (grief in the lungs, fear in the kidneys, anger in the liver). Yet both systems agree on certain fundamentals: that the human being has a subtle-energy dimension that operates according to its own principles; that this dimension can be cultivated and regulated through practice; that blockages and imbalances in the energy system manifest as physical and psychological disturbance; and that the highest form of human health involves not just the physical body but the full integration of these subtle dimensions. Contemporary researchers have noted correlations between acupuncture meridian pathways and distributions of specific connective tissue types, and between chakra locations and concentrations of nerve ganglia — suggestive convergences that warrant continued investigation.