Eastern traditions refer to energy as prana or vital life force. It swirls and untwirls into the body from food choices, air quality, and the environment around you.
Tantric Buddhists explain that prana is a wind essence held within the body. Chinese medicine and acupuncture refer to prana asch'i, which courses through the universe and body's meridians. Seventy-two thousand energy channels occupy the body in three channels: left side body, right side body, and central channel (i.e., the spine).
Given that we are not only physical beings but energetic organisms, equalizing prana becomes a daily practice. Using the prana mudra during meditation and yoga is one powerful method.