Twelve CFS male and female patients between the ages of 20-70 years will be recruited to participate in this pilot study. Subjects will be eligible to participate if they meet the criteria for CFS of the Centers for Disease Control and Prevention (CDC). These include persistent, unexplained fatigue for at least 6 months, concurrent with four of the following: impaired memory/concentration, sore throat, new headaches, unrefreshing sleep, muscle pain, multi-joint pain, tender lymph nodes, and post-exertional malaise. Subjects will be screened for eligibility; the study will be explained and a verbal consent will be given over the telephone. If the subject agrees, they will be sent a questionnaire assessing their clinical and fatigue status prior to starting ENT and their present clinical and fatigue status, as well as their compliance to ENT.