Although the Biospace America InBody 520 scale is routinely used to analyze body composition in various settings including the Ahmanson-UCLA Cardiomyopathy clinic, due to theoretical concerns of safety, bioimpedance has not been routinely used in patients with ICDs. The investigators hope that this study will allow us to routinely analyze body composition in heart failure patients with ICDs, information which can be used to help guide dietary, exercise, and medical prescriptions for the investigators heart failure patients.