Intuitive Fasting: The Flexible Four-Week Intermittent Fasting Plan to Recharge You Metabolism and Renew Your Health

by Will Cole

too much inflammation and oxidative stress—both of which are ameliorated by fasting—are thought to be underlying causes of chronic fatigue.17 Therefore, don’t be surprised if you are shocked by how steady and energized you feel this week. You may start jumping out of bed without grogginess or stiffness and make it through the afternoon without a single yawn. In my own life and my patients‘ lives, this is one of the most practical, real-life benefits of fasting. Less fatigue means more energy to exercise, spend time with friends, or work on projects you’re passionate about—the list is endless. With increased energy levels often comes increased mood. As it turns out, fasting may also directly influence mood in a positive way. In fact, studies have shown that fasting can have antidepressant effects, which may be explained by a profound increase in neuronal autophagy (which is just autophagy of the brain cells) and an increase in serotonin, endorphins, and brain-derived neurotrophic factor (BDNF), a few major contributors to mood regulation.18, 19, 20