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Fasting makes me feel more tired than usual?

Common Issues of Fasting · 1 min read · Sep 14, 2025
Fasting can make some people feel more tired than usual because certain individuals are more sensitive to insulin utilization. When you suddenly begin fasting, your body may use less energy, leading to increased fatigue. We recommend that those who feel tired adopt a gradual fasting approach, such as starting with a 12-hour fast. Additionally, it's important to check whether your total calorie intake is sufficient during your eating window. Some people may eat significantly less while fasting, resulting in low overall calorie intake, which can make the body more easily fatigued when it doesn’t get enough fuel.

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