The Meridian Set consists of 14 tuning forks designed to be used with the 12 major (plus 2 Extra Vessel, DU and REN) Acupucture Meridians and their respective Acupoints. They can also be used on the reflex zones of the feet and hands. The frequencies range from very low to very high. The forks are listed below. Lung Large Intestine Stomach Spleen/Pancreas Heart Small Intestine Bladder Kidney Pericardium Triple Heater/Warmer Gall Bladder Liver Central Vessel (REN) Governing Vessel (DU) Qi (pronounced "chi") is the life force energy that circulates throughout the body via pathways called Meridians. The qi in a given meridian is strongest during a specific two-hour interval of the twenty-four hour day. The way qi travels in this cycle through the meridians is referred to as the “Meridian Clock.” When this flow is balanced and harmonious, we experience physical and emotional wellbeing. When the flow is blocked, erratic or depleted, we experience physical or emotional dis-ease. Qigong, acupuncture, acupressure, and the Meridian Tuning Forks are tools which help us to maintain a healthy flow of qi through the meridian system.