How to lose 10kg in 8 weeks?

How to lose 10kg in 8 weeks? You need to create a calorie deficit of about 1,250 calories per day through diet changes and exercise, and this goal is realistic for most people who weigh over 80kg.

Is Losing 10kg in 8 Weeks Safe?

Yes, losing 10kg in 8 weeks is safe for most adults. This works out to 1.25kg per week, which sits within the healthy weight loss range of 0.5kg to 1.5kg per week that health experts recommend. People who weigh more can lose weight faster at the start without health risks.

Your body needs to burn 7,700 calories to lose 1kg of fat. To drop 10kg in 8 weeks, you need a daily calorie deficit of 1,375 calories. You achieve this through eating less and moving more.

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How Many Calories Should I Eat?

Eat 500 to 750 fewer calories than your body burns each day. Most women need 1,200 to 1,500 calories daily for weight loss, and most men need 1,500 to 1,800 calories.

Here’s how to find your number:

1. Calculate your maintenance calories (the amount you need to stay the same weight)
2. Subtract 500 to 750 calories from that number
3. Never drop below 1,200 calories if you’re a woman or 1,500 if you’re a man

A person who burns 2,500 calories per day should eat around 1,750 to 2,000 calories to lose weight steadily. This creates enough deficit to burn fat without slowing down your metabolism.

What Should I Eat to Lose 10kg?

Focus on protein, vegetables, and whole foods while cutting out processed foods and sugar. Your plate should have 30% protein, 40% vegetables, and 30% healthy carbs at each meal.

Foods that help you lose weight:

1. Lean proteins – chicken breast, fish, eggs, Greek yoghurt, tofu
2. Vegetables – broccoli, spinach, cauliflower, capsicum, zucchini
3. Healthy carbs – brown rice, quinoa, sweet potato, oats
4. Healthy fats – avocado, nuts, olive oil, salmon
5. Fruits – berries, apples, oranges (limit to 2 serves per day)

Foods to avoid:

1. Sugary drinks and juices
2. White bread, pasta, and pastries
3. Chips, biscuits, and processed snacks
4. Fried foods and takeaway meals
5. Alcohol (save for special occasions)

Protein keeps you full and protects your muscle while you lose fat. Aim for 1.6g to 2.2g of protein per kilogram of body weight each day. A 80kg person needs 128g to 176g of protein daily.

How Much Exercise Do I Need?

Do 150 to 300 minutes of exercise each week, combining both cardio and strength training. This breaks down to 30 to 60 minutes, 5 days per week.

Your weekly exercise plan:

1. Strength training – 3 to 4 sessions per week, 45 minutes each
2. Cardio – 3 to 5 sessions per week, 30 to 45 minutes each
3. Walking – 10,000 steps every day

Strength training burns calories and builds muscle, which speeds up your metabolism. Each kilogram of muscle burns an extra 100 calories per day just existing. Compound exercises like squats, deadlifts, push-ups, and rows work multiple muscles and burn more calories.

Cardio options that burn 300 to 500 calories per session include running, cycling, swimming, rowing, and high-intensity interval training. Pick activities you enjoy so you stick with them.

Do I Need to Track My Food?

Yes, track everything you eat for the full 8 weeks. Studies show people who track their food lose twice as much weight as people who don’t track.

Use a food tracking app to log:

1. Every meal and snack
2. Portion sizes in grams
3. Cooking oils and sauces
4. Drinks including coffee additions
5. Weekend meals (when most people overeat)

People underestimate how much they eat by 30% to 50% when they don’t track. A tablespoon of olive oil adds 120 calories, a handful of nuts adds 200 calories, and these small amounts add up fast.

Weigh your food with kitchen scales for the first 2 weeks until you learn proper portions. This teaches you what 100g of chicken or 50g of rice looks like on your plate.

How Much Water Should I Drink?

Drink 2 to 3 litres of water every day. Water fills your stomach, reduces hunger, and boosts your metabolism by 30% for up to 90 minutes after drinking.

Drinking 500ml of water before each meal helps you eat 75 fewer calories per meal. Over 8 weeks, this adds up to 12,600 fewer calories or 1.6kg of extra fat loss just from water.

Signs you’re drinking enough water:

1. Your pee is pale yellow
2. You don’t feel thirsty
3. You have more energy
4. Your skin looks better
5. You feel less hungry between meals

Replace all sugary drinks, juice, and soft drinks with water. A can of soft drink contains 140 calories and 39g of sugar, which stops fat burning for hours.

What Results Should I Expect Each Week?

Week 1-2: Lose 2 to 3kg. Most of this is water weight and bloating leaving your body as you cut carbs and salt.

Week 3-4: Lose 1 to 1.5kg per week. Your body adjusts to the new routine and fat burning kicks in properly.

Week 5-6: Lose 0.75 to 1.25kg per week. Weight loss slows down as you get lighter, which is normal.

Week 7-8: Lose 0.5 to 1kg per week. The final kilos come off slower but you’ll notice big changes in how your clothes fit.

Your weight will go up and down daily because of water, food in your digestive system, and hormones. Weigh yourself once per week at the same time, first thing in the morning after using the bathroom.

How Do I Avoid Losing Muscle?

Eat enough protein and lift weights 3 to 4 times per week. When you lose weight, 20% to 30% typically comes from muscle unless you protect it with these two actions.

Studies show people who do strength training while dieting lose 95% fat and only 5% muscle. People who only do cardio or don’t exercise lose 75% fat and 25% muscle.

Muscle burns calories all day, makes you look toned, and keeps your metabolism high. Losing muscle slows your metabolism and makes weight regain easier.

Keep your strength training weights heavy enough that your last 2 reps feel challenging. Progressive overload (adding more weight over time) signals your body to keep the muscle.

What If I Stop Losing Weight?

Reduce calories by another 100 to 200 per day or add 30 minutes more exercise per week. Weight loss plateaus happen when your smaller body needs fewer calories than before.

An 80kg person burns about 2,200 calories per day, but a 70kg person only burns 2,000 calories per day. As you lose weight, you need to adjust your food intake down to match your new lower calorie needs.

Common plateau causes:

1. Not tracking food accurately
2. Eating back all the calories you burn exercising
3. Weekend overeating that cancels weekday deficits
4. Not getting enough sleep (less than 7 hours)
5. High stress raising cortisol levels

If the scale doesn’t move for 2 weeks, take measurements of your waist, hips, and thighs instead. You might be losing centimetres even when weight stays the same, especially if you’re building muscle.

How Important Is Sleep?

Get 7 to 9 hours of sleep every night. People who sleep less than 6 hours lose 55% less fat and 60% more muscle compared to people who sleep 8 hours, even on the same diet.

Lack of sleep increases ghrelin (hunger hormone) by 15% and decreases leptin (fullness hormone) by 15%. This makes you hungrier and want high-calorie foods the next day.

One study found tired people ate 385 extra calories per day, mostly from snacks and carbs. Over 8 weeks, poor sleep could add 21,560 extra calories or cancel out 2.8kg of potential fat loss.

Ways to improve sleep:

1. Go to bed at the same time every night
2. Make your room completely dark
3. Keep your bedroom cool (18 to 20 degrees)
4. Stop screens 1 hour before bed
5. Avoid caffeine after 2pm

Can I Have Cheat Meals?

Have one cheat meal per week, not a whole cheat day. A structured cheat meal helps you stick to your plan long-term and boosts leptin levels that can drop during dieting.

Keep your cheat meal to 800 to 1,000 calories and schedule it at the same time each week. This gives you something to look forward to while staying on track.

A full cheat day where you eat whatever you want can add 3,000 to 5,000 extra calories, which wipes out 3 to 4 days of calorie deficit. The maths shows this slows your results by 40% to 50%.

Enjoy your cheat meal without guilt, then get straight back to your plan the next meal. One meal won’t ruin your progress but one meal turning into three days will.

What Supplements Help Weight Loss?

Caffeine, green tea extract, and protein powder work. Most other supplements waste your money.

Caffeine boosts metabolism by 3% to 11% and increases fat burning by 10% to 29%. Drink 200mg to 400mg per day from coffee or supplements, ideally before workouts. This equals 2 to 4 cups of coffee.

Green tea extract contains EGCG, which increases fat burning by 17% when combined with exercise. Take 250mg to 500mg daily.

Protein powder makes hitting protein targets easier when you struggle to eat enough meat, fish, and eggs. Whey protein costs about $2 to $3 per serve and provides 20g to 30g of protein.

Skip fat burners, detox teas, and raspberry ketones. Research shows these don’t work better than placebo, and some contain ingredients that raise blood pressure or cause anxiety.

How Much Does This Cost?

Expect to spend $80 to $120 per week on food for one person. Eating whole foods costs about the same as eating processed foods and takeaway when you plan properly.

Budget breakdown:

1. Protein foods – $35 to $50 (chicken, eggs, fish, Greek yoghurt)
2. Vegetables and fruit – $20 to $30
3. Carbs and grains – $10 to $15 (rice, oats, sweet potato)
4. Healthy fats – $10 to $15 (olive oil, nuts, avocado)
5. Protein powder – $5 to $10

Meal prep on Sundays saves money and time. Cook 3 to 4 days of meals at once and store them in containers. This stops you from ordering expensive takeaway when you’re tired or busy.

Buying in bulk, choosing frozen vegetables, and picking cheaper protein sources like eggs and canned tuna cuts costs without hurting results.

What Mistakes Should I Avoid?

Don’t cut calories too low, skip meals, or do excessive cardio. These mistakes slow your metabolism and make you lose muscle instead of fat.

Common mistakes that stop progress:

1. Eating under 1,200 calories (women) or 1,500 calories (men)
2. Doing 2+ hours of cardio daily while barely eating
3. Cutting out entire food groups unnecessarily
4. Weighing yourself multiple times per day
5. Comparing your progress to others
6. Giving up after one bad meal
7. Not preparing food in advance
8. Drinking calories from juice, soft drink, or alcohol
9. Relying on exercise alone without fixing diet
10. Setting unrealistic expectations

The biggest mistake is trying to be perfect. You’ll have hard days where you overeat or miss workouts. What matters is getting straight back on track the next day, not throwing away all your progress because of one slip-up.

FAQ

Can I lose 10kg in 8 weeks without exercise?

No, you need exercise to lose 10kg in 8 weeks safely. Creating a 1,250 calorie deficit through diet alone drops your calories too low and causes muscle loss. Exercise lets you eat more food while still losing weight, and protects your muscle mass.

Will I have loose skin after losing 10kg?

No, most people won’t have loose skin from losing 10kg. Loose skin becomes an issue when you lose 30kg or more, especially if you lose weight too fast. Losing 1.25kg per week gives your skin time to adapt.

Do I need to count calories forever?

No, you only need strict calorie counting during active weight loss. Once you reach your goal weight, you learn portion sizes and food choices well enough to maintain weight without tracking everything. Most people benefit from tracking protein intake long-term though.

Can I drink alcohol while losing weight?

Limit alcohol to 1 to 2 drinks per week maximum. Alcohol contains 7 calories per gram (nearly as much as fat), stops fat burning for hours, and makes you hungier. A glass of wine has 120 to 150 calories, and beer has 150 to 200 calories.

What if I’m not hungry enough to eat my protein target?

Drink a protein shake, eat Greek yoghurt, or have eggs. These protein sources take less space in your stomach than chicken or steak. Split your protein across 4 to 5 smaller meals instead of 3 large meals.

Should I do cardio or weights first?

Do weights first when you have the most energy. Strength training needs proper form and focus, while you can still do cardio effectively when tired. If you do separate sessions, the order doesn’t matter.

Can I lose weight faster than 10kg in 8 weeks?

People over 100kg can safely lose faster, but pushing for more than 1.5kg per week increases muscle loss and makes the diet harder to stick to. Slower weight loss has better long-term success rates.

What if I travel during the 8 weeks?

Pack protein snacks, choose grilled proteins and vegetables at restaurants, and walk more to offset eating out. One week of travel won’t ruin 8 weeks of work if you make decent choices and get straight back on plan when you return.

Do I need to eat breakfast?

No, meal timing doesn’t affect weight loss. Eat your calories whenever suits your schedule best. Some people prefer skipping breakfast and eating larger lunches and dinners.

Will my metabolism slow down permanently?

No, your metabolism returns to normal when you finish dieting and eat at maintenance calories again. The metabolic slowdown during dieting is temporary and reverses within weeks of eating more.