16:8 Intermittent Fasting for Beginners

What you will notice

What you get out of it

This is what changes in your day to day when you give your body well-guided hours without food.

Start without suffering

No jumping straight to 16 hours. You build up slowly and your body keeps up.

Why:Hunger is a schedule habit: it adjusts in days if you ramp up gradually.

More energy in the afternoon

Many people notice the after-lunch crash just stops happening.

Why:Smaller blood sugar spikes after meals mean fewer crashes.

Goodbye, snacking

You stop opening the fridge when you're not hungry. Two or three meals and done.

Why:With set meal times, your hunger hormone learns when food is coming.

Less bloating, smaller waist

Clothes start fitting better without counting calories or weighing food.

Why:Hours with low insulin help your body tap into stored fat.

You sleep better

Earlier dinners mean no heavy stomach at bedtime and better rest.

Why:Going to bed with digestion done improves sleep quality.

You never lose track

Alerts at every phase, streaks, and history to keep you motivated.

Why:Seeing your progress is what turns an attempt into a habit.

SCIENCE · PHASE BY PHASE

What happens in your body, hour by hour

The app tells you the moment you enter each phase. No more waiting around to "see if it works."

4h

Digestion

Energy from your last meal

0-4hDigestion

Energy from your last meal

You just had dinner. Start the timer and forget about it until morning.

4-8hStable blood sugar

Rest without heavy digestion

You're asleep. This part of the fast costs you nothing.

8-12hLow insulin

You start tapping reserves

You wake up. Water, black coffee, or tea. First goal this week: 12 hours.

12-14hFat burning

Your body uses fat for energy

Hunger may show up. It comes in waves and passes in 15-20 minutes.

14-15hLight ketosis

Clear head

Hunger usually settles down instead of building. It'll surprise you.

15-16h16:8 goal

First 16:8 in the books

Break your fast with protein, veggies, and some carbs. Streak added.

Your progress

What to expect, week by week

Week 1

You hit 12 hours effortlessly: most of it is just sleep.

Weeks 2-3

You move to 14, then 16 hours. Morning hunger barely shows up.

Month 1

16:8 is your routine. Less bloating and afternoons with real energy.

Month 3

Habit locked in and clothes fitting better. Without ever dieting.

Frequently asked questions

How do I start 16:8 if I've never fasted?

Gradually. Week one: 12 hours (dinner at 9 p.m., breakfast at 9 a.m.). Week two: 14 hours. After that, 16. Ayuname builds the plan for you and alerts you at every phase so you're never guessing.

What can I drink during the fast?

Water, sparkling water, black coffee, tea, and unsweetened herbal teas. Milk, juice, sugary soda, or even one small bite will break your fast.

How much weight do you lose on 16:8?

It depends on the person, on what you eat in your window, and on how much you move. We don't promise numbers. What many people notice early on is less bloating, less snacking, and more energy.

Is it normal to feel hungry or get headaches at first?

Yes, it's common in the first few days. Drink water, add a pinch of salt, and don't add hours too fast. If you feel dizzy or unwell, break your fast. It usually passes within a week or two.

Do I have to eat breakfast or dinner?

Your call. The easiest setup for most people is skipping breakfast and eating from 1 p.m. to 9 p.m. If you'd rather have breakfast, eat dinner earlier, say 9 a.m. to 5 p.m. What matters is that it fits your life.