When people feel they cannot go beyond twenty-four hours of fasting, we sometimes advise them to try three to seven full days of fasting. This sounds completely counterintuitive. If you can’t go one day, how can you go seven days? This “hack” works because the extended fasting gives people the chance to experience how hunger can disappear without eating as the body learns how to metabolize its own fat. The long fast rapidly acclimates their bodies to fasting. Once they get over the first one or two days, hunger starts to disappear and they become reassured that they are not overwhelmed by
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