Calorie Deficit Without Crash Dieting
How to set a sustainable calorie deficit for fat loss - TDEE-based targets, realistic rate of loss, and weekly adjustments without extreme restriction.
In short
Start with TDEE minus about 300-500 kcal, aim for roughly 0.25-0.75% body weight loss per week, keep protein high, and adjust by 100-200 kcal every 2-4 weeks based on trend - not daily scale swings.
A calorie deficit means you eat slightly less than you burn. The goal is fat loss you can sustain - not a week of misery followed by a rebound.
Step 1 - Estimate maintenance first
Use your TDEE calculator to find maintenance calories. Without that baseline, deficit targets are guesswork.
Step 2 - Set a moderate deficit
| Approach | Typical adjustment |
|---|---|
| Moderate cut | TDEE minus 300-500 kcal |
| Aggressive (short term) | TDEE minus 500-750 kcal |
Most gym-goers do better with a moderate cut that preserves training quality and recovery.
Avoid dropping below ~1,500 kcal (women) or ~1,800 kcal (men) without professional guidance - these are rough floors, not rules for everyone.
Step 3 - Anchor protein and fiber
During a cut, protect what matters:
- Protein: often 1.8-2.2 g per kg - use the protein calculator
- Fiber: around 14 g per 1000 kcal for fullness and digestion
Carbs and fat flex around those anchors. See how to track macros for a simple logging routine.
Step 4 - Judge progress on weekly trends
Daily scale weight bounces from water, sodium, and training. Review 2-4 week averages:
- Morning weight trend
- Gym performance (reps, loads, energy)
- Hunger and sleep
Aim for roughly 0.25-0.75% body weight loss per week. Faster is not always better if strength and recovery crash.
Step 5 - Adjust in small steps
If fat loss stalls for 2+ weeks and logs were consistent:
- Remove 100-200 kcal, or
- Add 2,000-3,000 steps per day
Large cuts after a plateau often backfire. Small changes are easier to maintain.
Log calories and workouts together
Fat loss progress depends on both nutrition and training. When they live in separate apps, cause and effect gets blurry. Refyuel Health OS pairs calorie tracking with workout logging so weekly reviews actually connect the dots.
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*Educational content only - not medical or dietetic advice. See our health disclaimer.*
Frequently asked questions
What is Refyuel Health OS?
Health OS is Refyuel’s mobile fitness app for iOS and Android. It combines workout planning and set logging with meal and macro tracking in one place.
Is Health OS free?
Yes. Core workout and nutrition logging are free at launch. Advanced features may be added later as optional upgrades.
How do I get started?
On the web, answer a few questions, create your account, and get a matched plan via Get started. Then open the Health OS app to train and log nutrition.
Do I log workouts on the website?
No. The website is for setup and creating your account. Daily workouts and nutrition logging happen in the Health OS app.
Can I use only workouts or only nutrition?
Yes. Use either module on its own, or both together for a full train-and-fuel day.
Where do I download the app?
Health OS is on the App Store and Google Play. Create your account first via Get started, then open the app.
How do I delete my account?
Delete from Profile → Settings in the app, or follow the steps on our delete account page. Confirmed deletions are purged within 30 days.
Get started with Health OS
On the web: answer a few questions and create your account. Workouts and nutrition live in the Health OS app on Android or iOS.
Get startedOr download: Google Play · App Store