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Intermittent fasting (IF) cycles between periods of eating and fasting. The most common protocols are 16:8 (fast 16 hours, eat within 8-hour window), 18:6, and 5:2 (two 500-600 kcal "fast days" per week). Benefits include improved insulin sensitivity, metabolic flexibility, and appetite regulation.

단계별 가이드

1. 116:8: stop eating at 8pm → break fast at noon the next day
2. 2Time-restricted eating aligns feeding with circadian biology
3. 3Autophagy (cellular cleanup) accelerates after 16–24 hours of fasting
4. 4Fasting insulin drops significantly after 12–14 hours without food

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