a test done by an auditor using the E-Meter to measure the preclear's basal metabolism: the basic chemical change in the body between oxygen and fuel. The test is done by having the precleartake a deep breath, hold it for just a moment and then let it out through his mouth. When the sufficiently fed and rested preclear takes in oxygen, it combines with the fuel and you will see a surge of physical energy on the meter. The needle will give a fall. For further information, read the book E-Meter Essentials by L. Ron Hubbard. —EM-10 and EM-10A Approved Film Glossary