Frequently Asked Questions

To lose weight, you need to eat fewer calories than your body burns — this is called a calorie deficit. A common approach is to reduce your Total Daily Energy Expenditure (TDEE) by 500 calories per day, which typically leads to about 0.5 kg (1 pound) of weight loss per week. Use our calculator to find your personal TDEE, then subtract 500 to get your weight loss target.

Physical activity significantly increases the number of calories your body burns each day. Your Basal Metabolic Rate (BMR) only accounts for calories burned at rest. When you factor in exercise and daily movement, your Total Daily Energy Expenditure (TDEE) can be 20% to 70% higher than your BMR, depending on your activity level. More active people need more calories to maintain their weight.

It's possible but difficult. Beginners, people returning to training after a break, and those with higher body fat percentages are most likely to build muscle in a deficit — a process called body recomposition. The key is eating enough protein (1.6–2.2 g per kg of body weight), strength training consistently, getting adequate sleep, and keeping the deficit moderate (no more than 500 calories).

To gain weight or build muscle, you need a calorie surplus — eating more than your body burns. A surplus of 300–500 calories above your TDEE is recommended for lean muscle gain. Going much higher than that tends to add more fat than muscle. Combine this surplus with strength training and adequate protein intake (1.6–2.2 g per kg) for best results.

Several factors can cause a weight loss plateau: underestimating portion sizes, not counting cooking oils or sauces, metabolic adaptation (your body burns fewer calories as you lose weight), water retention from high sodium or exercise, and hormonal fluctuations. Try recalculating your TDEE at your current weight, weighing your food more accurately, and being patient — weight loss isn't always linear.

Calorie calculators provide a solid estimate — typically within 10% of your actual needs. The Mifflin-St Jeor equation used in our calculator is considered the most accurate formula for estimating BMR. However, individual factors like genetics, muscle mass, and hormones can cause variation. Use the calculator as a starting point, then adjust based on your real-world results over 2–3 weeks.

Both approaches can work. Eating the same amount daily is simpler and easier to track. Calorie cycling (eating more on training days, less on rest days) can help fuel workouts and support recovery, but the total weekly calories matter most. If your weekly average creates the right deficit or surplus, you'll see results regardless of daily variation.

Yes. Consistently eating too few calories can cause muscle loss, nutritional deficiencies, fatigue, hair loss, weakened immune system, and metabolic slowdown. For women, it can also disrupt menstrual cycles. Very low calorie diets (under 1,200 for women, under 1,500 for men) should only be followed under medical supervision. A moderate, sustainable deficit is always the safer approach.

The recommended daily protein intake depends on your goals. For general health, 0.8 g per kg of body weight is sufficient. For active people looking to maintain muscle, aim for 1.2–1.6 g per kg. For muscle building or fat loss while preserving muscle, 1.6–2.2 g per kg is optimal. For a 70 kg person, that's roughly 112–154 g of protein per day.

Absolutely. Many people lose weight by focusing on food quality rather than counting: eating more whole foods, vegetables, lean proteins, and fiber naturally reduces calorie intake. Mindful eating, portion control using hand measurements, reducing processed foods and sugary drinks, and eating slowly until satisfied are all effective strategies that don't require tracking numbers.

Sleep has a major impact on weight management. Poor sleep (less than 7 hours) increases hunger hormones (ghrelin), decreases satiety hormones (leptin), raises cortisol levels, and impairs insulin sensitivity — all of which promote weight gain and make fat loss harder. Studies show that sleep-deprived people eat 300–400 more calories per day on average. Aim for 7–9 hours of quality sleep for optimal results.