Insights & Updates
Fasting science, product updates, and tips to get the most from Atomic Fast.
Atomic Fast Now Speaks 10 More Languages
Atomic Fast 1.3.0 runs in Danish, Dutch, French, German, Italian, Norwegian, Portuguese, Russian, Spanish and Swedish — the app, your widgets, notifications and Watch.
Fasted Workouts: When They Help and When to Skip Them
Fasted workouts are fine for easy, shorter sessions and burn a little more fat in the moment, but eat first for long or heavy efforts, and stop if you feel dizzy.
How to Deal With Hunger While Fasting (It Comes in Waves)
Hunger during a fast rises and falls in waves tied to your usual meal times. Here's why it passes on its own, and the simple tactics that get you through the worst of it.
Free Fasting Timer Apps: What to Actually Look For
Most fasting timers are free to download and then hit you with a paywall. Here's how to tell a truly useful free fasting app from a trial in disguise.
Is Breakfast Really the Most Important Meal of the Day?
Randomized trials have tested the 'most important meal of the day.' Here's what they found about breakfast, weight, and metabolism — and why skipping it is fine on 16:8.
8 Beginner Fasting Mistakes (and the Easy Fix for Each)
The eight most common intermittent fasting mistakes new fasters make, and the simple fix for each one — so your first two weeks feel manageable and the habit sticks.
Why a Fasting Timer Needs a Food Log
A fasting timer only tracks half the day. What you eat in your window decides whether the fast was worth anything — here's why we built both into one app.
How to Pick a Fasting Window You'll Actually Keep
How to choose an intermittent fasting window that fits your real day — your hunger, your meals with people, and your workouts — so you actually stick with it.
I'm Fasting but Not Losing Weight: The Usual Culprits
You're sticking to your window and the scale won't move. Here are the six things that quietly stall intermittent fasting weight loss, and how to fix each one.
16:8 vs OMAD vs 5:2: Which Fasting Schedule Fits Your Life?
16:8, OMAD, and 5:2 all work by helping you eat less — so the real question isn't which is strongest, it's which one you'll actually keep. Here's how to pick.
Does Intermittent Fasting Actually Work? What 22 Trials Say
A Cochrane review pooled 22 trials and found fasting doesn't beat plain calorie cutting for weight loss. Here's what that really means, from an app that won't spin it.
How the Atomic Fast Timer Shows Your Metabolic Phase
How the Atomic Fast timer counts your fast and shows the metabolic phase you're moving through by the clock, plus how logging a meal suggests when to start your next fast.
Your First 16:8 Day: A Realistic Hour-by-Hour Walk-Through
What a first day of 16:8 fasting actually feels like, hour by hour — from your last bite, through the hunger waves, to your first meal the next day.
Does Fasting Burn Muscle? What the 16:8 Lifting Study Found
The fear that fasting eats your muscle is real, but a controlled 16:8 trial in trained lifters tells a more specific story about what protects muscle and what doesn't.
Coffee, Tea, and What Actually Breaks a Fast
Black coffee, tea, diet soda, a splash of milk, bulletproof coffee — here's what keeps you fasted, what quietly ends it, and why the answer depends on your goal.
Fasting Headache: Why It Happens and How to Stop It
That dull ache around hour 14 is common and usually harmless. Here's what's likely behind a fasting headache, how to shut one down fast, and how to stop them coming back.
How Long Does It Take to Get Into Ketosis While Fasting?
Most fasting charts promise ketosis at hour 12. The real timeline is slower and more personal. Here's what actually happens, and how to tell where you are.
Early vs. Late Eating Window: Does When You Fast Really Matter?
A new one-year study followed people who did 8-hour time-restricted eating early, late, or on their own schedule. Here's what it found about meal timing, keeping weight off, and protecting muscle.
Does 16:8 Fasting Actually Lower Blood Sugar? What 23 Trials Show
A December 2025 review pooled 23 trials on 16:8 time-restricted eating. Here's what it found for fasting glucose, insulin resistance, and cholesterol — and what it didn't settle.
Intermittent Fasting vs. Calorie Counting: Which Actually Works Better?
A large 18-month trial put intermittent fasting head-to-head with calorie counting. The weight loss was nearly identical — but one was far easier to stick to. Here's what that means for you.
When Does Autophagy Actually Start During a Fast?
The honest, evidence-based answer to how long you need to fast for autophagy — what the research really shows, why the popular hour-counts are shaky, and how to think about it.
What to Eat When You Break Your Fast (and What to Skip)
The best foods to break a fast for steady energy and blood sugar — plus what to avoid — and why the meal that ends your fast matters as much as the fast itself.
The Metabolic Phases of a Fast, Hour by Hour
A clear, science-backed timeline of what happens in your body during a fast — from digestion to fat-burning, ketosis, and autophagy — and how to know which phase you're in.
iCloud Backup, Google Drive Sync, and Data Export Are Here
Your fasting data is now protected. Back up to iCloud or Google Drive, restore on any device, and export your data in CSV or JSON.
Why Atomic Fast is the Smallest Fasting and Calorie Tracking App on the App Store
Most fasting and calorie tracking apps are 100–300 MB. Atomic Fast ships under 20 MB on both platforms with more features. Here's the engineering philosophy behind the difference.
Atomic Fast is Now on Android
Three days after our iOS launch, Atomic Fast lands on Google Play. Full feature parity, native Material Design, and everything you need to connect fasting with nutrition.
Atomic Fast is Live on the App Store
After months of development, Atomic Fast is officially available on iOS. Here's what we built, why we built it, and what's coming next.