Exercise, Immune System and Circadian Rhythm

Copyright: © 2015 Boukelia B. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abnormal circadian rhythms have been linked to illnesses such as diabetes, depression [1], bipolar disorder [2], seasonal affective disorder (SAD) [3] and even obesity [4]. Furthermore, circadian rhythms can affect body function and health due to sleep-wake cycles, body temperature [5], hormone release [6], and other important body functions. More recent studies have investigated other performance parameters that have also been found to possess a circadian rhythmicity, such as, stroke volume, cardiac output, blood pressure, vascular blood flow, metabolic rate, sweat rate and trunk flexibility [7].