The power of overnight intermittent fasting for cellular repair, better sleep and more...

nourishment Oct 07, 2025

Intermittent fasting is often spoken about in the context of long fasting windows and strict eating schedules. But one of the simplest, and most sustainable, ways to try intermittent fasting is something many of us already do without realising: overnight fasting.

Rather than being a restrictive diet, overnight intermittent fasting is about allowing the body a natural, extended rest period between the last meal of the evening and the first meal of the next day. Done with balance and intention, it can support digestion, energy, and overall wellbeing.

What Is Overnight Intermittent Fasting?

Overnight fasting means leaving a window of 12–14 hours between dinner and breakfast. For example, if you finish dinner at 7:30 pm, you would have breakfast around 7:30 am or later. This simple shift gives your body time to complete digestion, stabilise blood sugar, and focus on cellular repair while you sleep.

Unlike stricter fasting plans, this approach works with your natural circadian rhythm and is generally well tolerated for most people.

Why It Can Be Beneficial

  1. Supports Digestive Health
    A longer break between meals gives your gut a chance to reset, improving motility and reducing bloating.
  2. Balances Blood Sugar and Cravings
    When the body isn’t constantly processing food, it can maintain more stable blood sugar levels — helping reduce late-night snacking and morning sugar crashes.
  3. Encourages Cellular Repair
    During fasting, your body enters a gentle repair mode (sometimes called autophagy), clearing damaged cells and supporting long-term health.
  4. May Improve Sleep Quality
    Eating too close to bedtime can disrupt rest. Finishing dinner earlier and fasting overnight may help your body settle into deeper, more restorative sleep.
  5. Simple and Sustainable
    Because it’s aligned with natural eating rhythms, overnight fasting is easier to adopt than other fasting styles — no extreme rules, just a gentle pause.

How to Start

  • Aim for a 12-hour window first (e.g., 7 pm to 7 am).

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