Once you’ve built consistency with 12/12, 14/10, or 16/8, you may feel ready to challenge yourself with longer fasting windows. These methods give the body deeper rest and often unlock greater health benefits — but they require more discipline and mindfulness.
18/6 Fast
How it works: 18 hours fasting, 6 hours eating.
Example: Eat between 12:00 PM – 6:00 PM.
Why it’s great: Promotes fat burning and metabolic flexibility while still manageable for daily life.
20/4 Fast (OMAD – One Meal a Day)
How it works: 20 hours fasting, 4 hours eating, often condensed to one main meal.
Example: Eat one balanced meal at 5:00 PM and finish before 9:00 PM.
Why it’s great: Simplifies eating, reduces decision fatigue, and encourages mindful meals.
24-Hour Fast
How it works: Eat dinner, then don’t eat again until the following dinner (24 hrs).
Frequency: Once or twice per week is common.
Why it’s great: Provides deeper gut rest, supports autophagy (cellular cleanup), and builds mental resilience.
✅ Stay well-hydrated — water, black coffee, and tea are your allies.
✅ Keep your meals balanced — prioritize protein, healthy fats, and fiber.
✅ Plan around your schedule — choose fasting days when life feels less stressful.
✅ Break your fast gently — light meals, soups, or smoothies work best.
Safety Reminder: Longer fasts are not for everyone. If you have health conditions, are pregnant/nursing, or take medications, consult your doctor before trying these methods.
Intermediate fasting isn’t about toughness — it’s about tuning in to your body’s signals and building sustainable habits that support your health.