How to lose 5kg in 2 weeks?

How to lose 5kg in 2 weeks is one of the most searched fitness questions online. The short answer is yes, you can drop around 5kg in two weeks, but most of that weight comes from water and stored carbohydrates rather than pure fat. A safe and realistic fat loss rate sits between 0.5 to 1kg per week, which means you could lose 1 to 2kg of actual body fat in 14 days. The rest comes from water weight, which you shed when you cut carbs and sodium.

This article breaks down exactly what to eat, how to move, and what to expect when you want to lose weight fast.

Can you actually lose 5kg in 2 weeks?

Yes, the scale can drop 5kg in two weeks. But pure fat loss at that speed requires an extreme calorie deficit that most people cannot maintain. Here is the math. One kilogram of body fat contains about 7,700 calories. To lose 5kg of pure fat in 14 days, you would need a deficit of 38,500 calories total, or 2,750 calories per day. Most people only burn 1,800 to 2,500 calories daily just from living and breathing.

What actually happens when you lose 5kg quickly is a mix of fat, water, and glycogen. Glycogen is the carbohydrate your muscles store for energy, and every gram holds onto 3 to 4 grams of water. When you cut carbs, your body burns through glycogen first and releases all that water. This is why low carb diets show fast results on the scale during the first week.

A 2019 study in the journal Obesity found that people who lost weight rapidly were just as likely to keep it off as slow losers, as long as they followed a structured plan. Speed matters less than consistency.

What should you eat to lose weight fast?

Eat high protein foods at every meal and cut your daily fat intake in half. Protein burns more calories during digestion than any other food. Studies show that 20 to 30 percent of protein calories get burned just from digesting and absorbing them. Compare that to fat at 0 to 3 percent and carbs at 5 to 10 percent.

A high protein diet also kills hunger. A 2005 study found that people who doubled their protein intake naturally ate fewer calories without trying, and they lost over 4.5kg in 12 weeks with almost all of it being pure fat.

Aim for 1.6 to 2 grams of protein per kilogram of body weight. So if you weigh 80kg, eat between 128 and 160 grams of protein daily. Spread this across 4 to 5 meals.

Foods to eat more of

1. Chicken breast, turkey, lean beef
2. Fish like salmon, tuna, and cod
3. Eggs and egg whites
4. Greek yogurt and cottage cheese
5. Lentils, beans, and chickpeas
6. Vegetables at every meal
7. Whole fruits like apples, berries, and oranges
8. Oats, potatoes, and rice in smaller portions

Foods to eat less of

1. Butter and cooking oils
2. Cheese and cream
3. Fatty cuts of meat like ribeye
4. Fried foods
5. Sugary drinks and juices
6. Packaged snacks and chips
7. Alcohol

Fat contains 9 calories per gram while protein and carbs contain only 4 calories per gram. Cutting one tablespoon of oil from your cooking saves 120 calories. Swap a ribeye steak for a sirloin steak and you drop 15 grams of saturated fat in one meal.

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How many calories should you eat?

Your calorie target depends on your body weight and activity level. A good starting point for fast weight loss is multiplying your goal weight in kilograms by 22 to 26. So if your goal weight is 75kg, aim for 1,650 to 1,950 calories per day.

Do not go below 1,200 calories for women or 1,500 calories for men. Going too low crashes your metabolism and burns muscle instead of fat.

Track your food for at least the first week. Food labels can have up to a 20 percent error, so consistency matters more than perfection. If you track the same way every day, the errors even out over time.

Does exercise help you lose weight faster?

Exercise burns calories, but not as many as you think. A 2018 meta analysis found that fitness trackers overestimate calorie burn by 28 to 93 percent depending on the brand. That 500 calorie workout your watch shows might actually be 250 to 350 calories.

The bigger problem is compensation. When you do intense cardio, your body often burns fewer calories the rest of the day through something called NEAT, which stands for non exercise activity thermogenesis. NEAT includes all the small movements you do without thinking, like fidgeting, walking around the house, and even standing.

A study found that when people burned 2,000 extra calories per week through cardio, they lost less than half the expected fat because they moved less and ate more the rest of the day.

What is the best type of exercise for weight loss?

Walking beats intense cardio for fat loss when you look at the full picture. Walking does not spike your hunger, does not require recovery days, and does not reduce your NEAT.

Aim for 8,000 to 12,000 steps per day. A 30 minute walk burns 100 to 200 calories and adds about 3,000 steps. Do this twice a day and you hit 6,000 steps just from walking.

Resistance training matters too, but for a different reason. Lifting weights preserves your muscle while you diet. Muscle burns about 6 calories per pound at rest, compared to 2 calories per pound for fat. More muscle means a faster metabolism long term.

A good two week plan combines both. Lift weights 3 to 4 times per week for 30 to 45 minutes and walk every day.

Sample weekly exercise schedule

1. Monday. Full body strength training plus 30 minute walk
2. Tuesday. 45 minute walk, morning and evening
3. Wednesday. Upper body strength training plus 30 minute walk
4. Thursday. 45 minute walk, morning and evening
5. Friday. Lower body strength training plus 30 minute walk
6. Saturday. 60 minute hike or long walk
7. Sunday. Rest day with light stretching and 20 minute walk

How much water should you drink?

Drink 2 to 3 litres of water daily. Each glass of cold water burns about 8 calories because your body works to heat it up. More importantly, water helps you feel full and reduces the chances of mistaking thirst for hunger.

A study found that people who drank water before meals lost more weight than those who did not. The water fills your stomach and makes you eat less without trying.

What about intermittent fasting?

Intermittent fasting works for weight loss, but only because it helps you eat fewer calories overall. When you compare time restricted eating to regular eating with the same total calories, there is no difference in fat loss according to multiple meta analyses.

The benefit of fasting is that it gives you a clear rule. No eating before noon and no eating after 8pm leaves you with an 8 hour eating window. For some people, this makes it easier to avoid snacking.

If fasting makes you hungrier and leads to binge eating, skip it. The best diet is the one you can actually stick to.

How do you stop water retention?

Water retention makes you look and feel puffy. Cutting sodium and increasing potassium helps your body release extra water.

Reduce processed foods because they contain hidden sodium. A single fast food meal can have 2,000 to 3,000mg of sodium, which is more than a full day’s worth.

Eat potassium rich foods like bananas, potatoes, spinach, and avocados. Potassium balances sodium and helps your kidneys flush out excess water.

Sleep also affects water retention. A bad night of sleep increases cortisol, which makes your body hold onto water. Aim for 7 to 8 hours every night.

What can you expect after 2 weeks?

Following this plan, most people lose 3 to 5kg on the scale. About 1 to 2kg comes from fat loss and the rest comes from water and glycogen. Your clothes will fit better, your face will look leaner, and your energy levels will improve.

Keep in mind that weight fluctuates 1 to 2kg daily just from water, food in your stomach, and hormones. Weigh yourself first thing in the morning after using the bathroom and take the weekly average rather than focusing on daily numbers.

Sample 2 week meal plan

Day 1 to 7 breakfast options

1. 3 scrambled eggs with spinach and tomatoes
2. Greek yogurt with berries and a handful of almonds
3. Protein smoothie with banana, protein powder, and almond milk
4. Oatmeal with protein powder mixed in and sliced apple

Day 1 to 7 lunch options

1. Grilled chicken breast with mixed salad and olive oil dressing
2. Tuna salad with vegetables and lemon juice
3. Turkey and vegetable stir fry with a small portion of rice
4. Lentil soup with a side of steamed vegetables

Day 1 to 7 dinner options

1. Baked salmon with roasted broccoli and sweet potato
2. Lean beef stir fry with bell peppers, onions, and brown rice
3. Grilled chicken thighs with quinoa and green beans
4. White fish with roasted vegetables and a small side salad

FAQ

Is losing 5kg in 2 weeks safe?

Losing 5kg in 2 weeks is generally safe for most healthy adults when done through diet and exercise rather than extreme measures. Most of the weight comes from water, not fat. If you feel dizzy, extremely tired, or weak, increase your calories slightly.

Will I gain the weight back after 2 weeks?

You will regain some water weight once you start eating normally again. The fat you lost stays off as long as you do not go back to overeating. Research shows that people who exercise regularly after dieting keep the weight off better than those who do not.

Should I take supplements to lose weight faster?

Most weight loss supplements do not work. Green tea extract might increase calorie burn by 60 to 70 calories per day according to some studies, but that is less than one apple. Focus on protein intake, sleep, and consistent exercise instead.

What if I hit a plateau?

If your weight stalls, check that you are tracking food accurately. Hidden calories from cooking oils, sauces, and drinks add up fast. You can also add 15 minutes of walking per day or reduce calories by 100 to 200.

Can I eat carbs and still lose weight?

Yes. Carbs do not cause weight gain when total calories are in check. Low carb diets cause faster initial weight loss because of water loss, but long term fat loss is the same when calories are matched. Eat carbs around your workouts for better performance.

How do I stop feeling hungry on a diet?

Eat protein at every meal, fill half your plate with vegetables, drink water before eating, and get enough sleep. Hunger often spikes when you cut calories too fast, so start with a smaller deficit and adjust from there.

What happens to my metabolism when I diet?

Your metabolism slows down when you lose weight because your body needs fewer calories to run. A 10 percent drop in body weight can reduce your daily calorie burn by up to 500 calories. This is why gradual weight loss and strength training to preserve muscle matter.

Rapid weight loss requires a disciplined approach to both diet and exercise, and every detail counts — even whether drinking cold water burns extra calories. Nutrient timing also plays a part, so it’s worth exploring the best time to eat a banana around your workouts for optimal energy. To lose weight safely and effectively at this pace, consider working with a personal trainer in Yarraville who can design a sustainable short-term programme.