Clear, honest, no-hype guides to intermittent fasting from Clustle Studio — the team behind the StreakFast app.
The six metabolic stages of a fast — digestion, glucose depletion, ketosis, fat burning, deep ketosis, and autophagy — with approximate timings.
A beginner's guide: choosing your eating window, what breaks a fast, easing in, and common mistakes.
The main fasting schedules side by side — who each one suits, pros and cons, and how to pick the right one for you.
What to eat first, which foods to avoid, and why breaking a long fast gently matters.
A clear list of what does and doesn't break a fast — coffee, water, sweeteners, gum, supplements — and why it depends on your goal.
Hormonal considerations, gentler schedules to start with, and who should avoid fasting.
How they differ, the pros and cons of each, and whether you still need a calorie deficit.
An honest, evidence-based look at what intermittent fasting can and can't do — sorting well-supported benefits from overhyped claims, and why adherence matters most.
A troubleshooting guide to why the scale stalls on intermittent fasting — hidden calories, portion creep, poor sleep, water weight — plus practical fixes and why consistency beats the daily scale.
An honest look at hunger, headaches, fatigue, poor sleep, dizziness and more — why each happens, how to manage it, and who should avoid fasting.
An honest look at eating one meal a day (roughly 23:1) — how it works, its real pros and cons, how to do it more safely, and who should skip it.
A no-hype, week-by-week look at what 16:8 results really depend on, why the daily scale misleads, and why a consistent streak beats chasing pounds.
A no-hype look at fasted cardio vs strength training, what the evidence really shows, workout timing, hydration, and protecting muscle.
Black coffee generally won't break your fast, but milk, sugar, and bulletproof coffee will — here's how to choose by your goal.
Why longer fasts drop sodium, potassium and magnesium — causing headaches, cramps and fatigue — and how to get enough salt safely without breaking your fast.
What autophagy really is, why fasting is linked to it, and an honest look at why the popular 16h, 24h and 72h figures are only estimates.
Five normal days, two low-calorie (~500-600 kcal) days a week — how the 5:2 diet works, how it compares to 16:8, its pros and cons, and how to start safely.
Fasting hunger comes in waves that pass — 10 honest, practical tactics to ride it out, plus when hunger is a red flag to stop.
What happens across a 48–72 hour fast, the real risks, who must avoid it, and how to break it safely — an advanced, safety-first guide.
The ten mistakes that make most beginners quit intermittent fasting — starting too hard, botching the first meal, chasing quick results — each with a practical fix.
The honest difference between clean fasting (water, black coffee, plain tea) and dirty fasting (small calories, cream, sweeteners, BCAAs) — and how to choose by goal.
The two-way link between fasting and sleep — how meal timing affects your rest, how poor sleep sabotages fasting, and practical timing habits that help.
Will intermittent fasting eat your muscle? Why short daily fasts spare muscle when protein and training are adequate, and how to protect it.
Track your fast the honest way. StreakFast shows your current fasting stage in real time — no account, no cloud, no ads. Your data never leaves your phone.
Download StreakFast — free on Google Play →