“Today, instead of experiencing a mellow and graceful transition to sleepiness during the evening hours, our exposure to artificial light after sunset kicks off a chain reaction of adverse hormonal events. Artificial light and digital stimulation after dark suppress the release of melatonin, the hormone that makes us feel sleepy in the evening (a process known as dim light melatonin onset, or DLMO). In tandem, we experience a spike in the primary stress hormone cortisol. Initially, cortisol floods the bloodstream with glucose, giving us a ‘second wind’ to stay awake and finish our emails or Netflix series binge.”

Thus, if you stress yourself in this manner every night, chronically elevated evening cortisol can bind with the appetite receptors in the brain and trigger you to consume high-calorie foods. Late nights also dysregulate ghrelin (spiking appetite) and leptin (promoting fat storage). Indeed, our digestive systems also have a circadian rhythm, and eating late at night can mess things up…making it likely that you’ll eat beyond feeling satisfied and store those calories as fat.”

—From The Keto Reset Diet

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