Fat loss starts with one rule
Every fat-loss result you have ever seen comes down to one principle: a calorie deficit. When your body uses more energy than you eat, it pulls the difference from stored fat. Diets, detox teas and "fat-burning" workouts only work when they create this gap.
The good news: you do not need to starve or live in the gym. You need the right deficit, enough protein, and training that protects your muscle. This guide shows you exactly how.
What is a calorie deficit?
A calorie deficit means calories in < calories out. Your daily burn is called TDEE (Total Daily Energy Expenditure), and it has four parts:
| Component | What it is | Share of daily burn |
|---|---|---|
| BMR | Energy to keep you alive at rest (heart, brain, breathing) | 60–70% |
| NEAT | Walking, standing, chores, fidgeting | 15–30% (varies most) |
| TEF | Energy used to digest food | ~10% |
| Exercise | Planned workouts | 5–10% |
Roughly 7,700 kcal equals 1 kg of body fat. A steady 500 kcal daily deficit therefore works out to about 0.5 kg of fat per week. Treat this as a guide, not a guarantee: water, hormones and adaptation make real progress less linear.
How to calculate your deficit
Step 1: Find your BMR (Mifflin-St Jeor equation, weight in kg, height in cm, age in years):
- Men: BMR = 10 × weight + 6.25 × height − 5 × age + 5
- Women: BMR = 10 × weight + 6.25 × height − 5 × age − 161
Step 2: Multiply by your activity level to get TDEE:
| Activity level | Multiplier |
|---|---|
| Desk job, little exercise | 1.2 |
| Light exercise 1–3 days/week | 1.375 |
| Moderate exercise 3–5 days/week | 1.55 |
| Hard exercise 6–7 days/week | 1.725 |
| Physical job + daily training | 1.9 |
Step 3: Subtract 300–500 kcal. Aim to lose 0.5–1% of body weight per week. Faster than that usually costs muscle, energy and consistency.
- BMR = 800 + 1,094 − 150 + 5 = about 1,750 kcal
- TDEE = 1,750 × 1.55 = about 2,700 kcal
- Fat-loss target = 2,700 − 500 = about 2,200 kcal per day
- Expected result: about 0.4–0.5 kg per week
Avoid going below roughly 1,200 kcal (women) or 1,500 kcal (men) without guidance from a doctor or qualified coach.
Your deficit calculator
Uses the same Mifflin-St Jeor method as above. For guidance only.
Where exercise fits in
Exercise does not replace the deficit, but it decides what kind of weight you lose. Diet alone can strip away muscle along with fat. Training tells your body to keep the muscle and burn the fat.
- Strength training (3–4 days/week): The most important workout in a deficit. It preserves muscle, keeps your metabolism higher and gives you a toned shape instead of a "skinny-fat" look. Focus on squats, deadlifts, presses, rows and lunges, and try to keep your strength up.
- Cardio (150–300 minutes/week): Brisk walking, cycling, swimming or 1–2 short HIIT sessions add to your burn and improve heart health. Keep it moderate so it does not hurt your strength sessions.
- NEAT (8,000–10,000 steps/day): Daily movement often burns more than your workout. Take stairs, walk during calls, and stay active after meals.
Protein and smart food choices
Eat 1.6–2.2 g of protein per kg of body weight daily. Protein protects muscle, keeps you full longer and uses more energy to digest. For an 80 kg person, that is roughly 130–175 g per day.
Easy Indian protein sources:
| Food | Serving | Protein (approx.) |
|---|---|---|
| Chicken breast | 100 g cooked | 31 g |
| Soya chunks | 50 g dry | 26 g |
| Paneer | 100 g | 18 g |
| Greek yogurt / hung curd | 200 g | 15–20 g |
| Whole eggs | 2 eggs | 12 g |
| Dal / chana / rajma | 1 katori cooked | 7–9 g |
Fill half your plate with vegetables, a quarter with protein, and a quarter with roti, rice or millets. Watch hidden calories: one tablespoon of ghee or oil is about 120 kcal, and sweets, namkeen, juices and sugary drinks add up fast.
Common mistakes and plateaus
- Guessing instead of tracking: Log your food for 2–3 weeks to learn real portions. Most people underestimate oil and snacks.
- Weekend overeating: Two heavy days can cancel five good days of deficit.
- Trusting machine calories: Treadmills and watches often overestimate burn. Do not "eat back" exercise calories.
- Crash dieting: Very large deficits lead to muscle loss, fatigue, cravings and rebound weight gain.
- Skipping strength training: You lose weight but look softer, not leaner.
- Panicking at the scale: Daily weight swings of 0.5–1.5 kg are normal (water, salt, carbs). Track the weekly average, waist size and photos.
- Poor sleep: Under 7 hours increases hunger hormones. Aim for 7–9 hours.
Sample weekly plan
| Day | Training | Daily target |
|---|---|---|
| Monday | Strength: upper body | 8,000+ steps |
| Tuesday | Cardio: 30–40 min brisk walk or cycle | 10,000 steps |
| Wednesday | Strength: lower body | 8,000+ steps |
| Thursday | Active recovery: yoga or mobility | 10,000 steps |
| Friday | Strength: full body | 8,000+ steps |
| Saturday | HIIT 20 min or a sport | 8,000+ steps |
| Sunday | Rest + relaxed walk | 6,000+ steps |
Every day: stay in your calorie target, hit your protein, drink 3+ litres of water and sleep 7–9 hours.
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This article is for general education. If you have a medical condition, are pregnant, or take regular medication, consult a doctor before changing your diet or exercise routine.