The first week of intermittent fasting is the hardest — and that's completely normal. Most people experience some hunger, low energy, and cravings in the first few days as their body shifts from burning sugar to burning fat. By day 7 to 10, those sensations typically fade and focus, energy, and appetite control begin to improve. Your body has been burning glucose — sugar from food — for energy your entire life. The moment you start fasting, you're asking it…
What is the first week of intermittent fasting like?
Wondering what the first week of intermittent fasting is really like? Here's exactly what to expect — and how to push through the hardest part.
2026-05-21
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