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 fibre
During a cut, protect what matters:
- Protein: about 1.4-2.0 g per kg is enough for most people who exercise - use the protein calculator
- Fibre: 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?
Refyuel is a coaching platform led by Refyuel Coach OS, the web app for coaches, and Refyuel Health OS, the free fitness app for anyone who trains, with optional coach linking. Refyuel is for people 16 and older.
What is Refyuel Coach OS?
Refyuel Coach OS is the lead product: a web app for personal trainers and online coaches to manage clients, build programs and templates, and message clients in one place.
What is Refyuel Health OS?
Refyuel Health OS is the free fitness app for iOS and Android, for anyone who trains: beginners, regular trainers, and lifters. Use it for workouts, nutrition, Habits, and gym progress. Linking to a coach in Coach OS is optional.
How do I start as a coach?
Sign up for Refyuel Coach OS via Start as a coach. Plans and caps are on pricing.
Is Health OS free?
Yes. Refyuel Health OS is a free standalone fitness app for anyone who trains; linking to a coach is optional. Workouts, nutrition, and Habits logging are included, with no subscription required for the core app.
Where is Health OS available on the App Store?
Health OS is on the App Store in Australia, Canada, India, New Zealand, the UAE, the United Kingdom, and the United States (expanding soon). Open the App Store listing.
How do I get started with Health OS?
On the web, answer a few questions and create your account via Get started. Then open the Health OS app to train, log nutrition, and use Habits, or join via your coach's invite.
Who is Refyuel for (age)?
Refyuel is for people 16 and older. You must be at least 16 to create an account or use the service.
Where do I download Health OS?
Health OS is on the App Store in Australia, Canada, India, New Zealand, the UAE, the United Kingdom, and the United States (expanding soon) and on Google Play.
How do I delete my account?
Open Refyuel → Profile tab → Settings (gear icon) → Account → Schedule account deletion… → enter your password and type DELETE to confirm. Or follow the steps on our delete account page. Confirmed deletions are purged within 30 days.
Can I leave Coach OS but keep Health OS?
To stop coaching but keep your account: Coach OS → Settings → Profile → Leave Coach OS → type LEAVE. End your active clients and cancel any paid coach plan first. Health OS stays as it is, and your clients keep their programs and logs.
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. Free fitness app for anyone · Coach link optional.
Get startedOr download: Google Play · App Store