The 4 Most Popular IF Protocols
The 16:8 method is the most popular starting point — and for good reason. You sleep through most of the fast, making it far easier than it sounds. Simply skip breakfast, have your first meal at noon, and stop eating by 8pm.
How Much Weight Will You Lose?
| Timeframe | Average Weight Loss | Notes |
|---|---|---|
| Week 1 | 2–5 lbs | Mostly water weight + glycogen depletion |
| Month 1 | 3–8 lbs | Real fat loss begins after week 1 |
| 3 Months | 10–24 lbs | Depends heavily on calorie intake |
| 6 Months | 15–40 lbs | Sustainable if eating habits are solid |
⏱️ Track Your Fasting Window
Use our free IF calculator to set eating windows and track fasting progress. Scan meals during your eating window to stay on target.
7-Day 16:8 Meal Plan
🔧 IF & Weight Loss Tools
❓ Intermittent Fasting FAQ
Q: What is the best intermittent fasting schedule for beginners?
A: 16:8 is the best starting point — skip breakfast, eat between 12pm–8pm. It's the easiest to maintain because most of the fast happens overnight while you sleep.
Q: How much weight can you lose in a month with intermittent fasting?
A: Most people lose 2–6 lbs in the first month. The rate depends entirely on your calorie intake during the eating window. IF doesn't automatically create a deficit — you still need to eat less than you burn.
Q: Can I drink coffee during intermittent fasting?
A: Yes. Black coffee (0 calories), plain tea, and water don't break a fast. Adding milk, sugar, or cream will break it. Bulletproof coffee (butter/MCT oil) technically breaks a strict fast but may not significantly impact fat-burning.
Q: Does intermittent fasting slow metabolism?
A: Short-term fasting (16–24 hours) actually increases metabolic rate by 3.6–14% due to norepinephrine release. Prolonged fasting (72+ hours) can slow metabolism. 16:8 IF does not slow your metabolism.
Q: What should I eat during my eating window?
A: Focus on high protein (chicken, eggs, fish, Greek yogurt), vegetables, and whole foods. Avoid using IF as an excuse to eat junk — it still has to be a calorie deficit for weight loss.
Q: Can women do intermittent fasting?
A: Yes, but some women experience hormonal disruptions with aggressive fasting (OMAD, extended fasts). 16:8 is generally well-tolerated. Stop if you experience irregular periods, excessive fatigue, or mood changes.
Q: When does autophagy start during fasting?
A: Autophagy (cellular cleanup) increases significantly after 16–18 hours of fasting. It's one reason many people do 18:6 or 20:4 protocols for longevity benefits beyond just weight loss.
Q: Can I work out while fasting?
A: Yes. Fasted training (working out near the end of your fasting window) can enhance fat oxidation. However, performance may suffer initially. Eat within 1–2 hours post-workout to support muscle recovery.
Start Your Fast Tonight
Use the IF timer to track your window, scan meals to stay in your calorie target, and lose weight without counting everything manually.