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Best Fasting Schedule: Finding Your Perfect Eating Window

Published on 2026-02-06

Best Fasting Schedule: Finding Your Perfect Eating Window

Not all fasting schedules are created equal. The best fasting schedule is one that fits your lifestyle, supports your goals, and you can maintain long-term. Let's explore your options.

Understanding Fasting Windows

A fasting schedule consists of two parts:

  1. Fasting window - Hours you don't eat
  2. Eating window - Hours you can eat

The ratio between these determines your schedule type.

Popular Fasting Schedules Compared

12:12 (Beginner Friendly)

Schedule: 12 hours fasting, 12 hours eating Example: 7 PM - 7 AM fasting

Best for:

  • Complete beginners
  • Those who struggle with longer fasts
  • Transitioning to stricter schedules

16:8 (Most Popular)

Schedule: 16 hours fasting, 8 hours eating Example: 12 PM - 8 PM eating

Best for:

  • Most people starting IF
  • Those wanting balance between results and flexibility
  • Sustainable long-term lifestyle

18:6 (Intermediate)

Schedule: 18 hours fasting, 6 hours eating Example: 1 PM - 7 PM eating

Best for:

  • People comfortable with 16:8
  • Those wanting enhanced fat burning
  • Busy schedules with limited meal time

20:4 (Advanced)

Schedule: 20 hours fasting, 4 hours eating Example: 4 PM - 8 PM eating

Best for:

  • Experienced fasters
  • Aggressive weight loss goals
  • Those who prefer larger meals

OMAD (One Meal A Day)

Schedule: 23 hours fasting, 1 hour eating

Best for:

  • Very experienced fasters
  • Maximum simplicity
  • Extreme discipline

How to Choose Your Schedule

Ask yourself:

Question If Yes → If No →
Am I new to fasting? Start with 12:12 or 16:8 Consider 18:6 or 20:4
Do I exercise in the morning? Eat earlier Eat later
Do I have social dinners? Keep evening eating Flexible timing
Do I get hungry in mornings? 16:8 with afternoon start Can try earlier windows

Finding Your Natural Eating Window

Many people naturally have an ideal eating time. Track your hunger patterns for a week:

  1. When do you first feel genuinely hungry?
  2. When do you naturally stop wanting food?
  3. When do you have the most energy?

This natural rhythm often indicates your ideal window.

Let IMCAF Track Your Schedule

IMCAF's fasting tracker helps you:

  • Set and monitor your fasting schedule
  • See real-time metabolic stage progress
  • Get notifications for eating windows
  • Analyze which schedules work best for you

Find your perfect fasting schedule with IMCAF.

Medical Disclaimer

The content on this blog is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

Written By

IMCAF Team

Validated by our nutrition data team for accuracy and safety.

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