Lost 1.8 kg (4 lb) in a Week? Did You Really Lose That Much Fat?

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You start trying to lose fat on Monday.

Less rice. No bread. A smaller evening meal than usual.

By Friday, you step on the scales:

Down approximately 1.8 kg (4 lb).

The results look impressive.

But here is the question:

Did all the weight you lost this week really come from fat?

The scales can tell you how much lighter you are, but not what you have actually lost. Short-term weight changes can reflect several factors, including water, glycogen, the contents of your digestive tract and body fat.

So before trying to lose fat, it helps to distinguish between two things:

1. When your weight drops, what has your body actually lost?

Being approximately 0.45 kg (1 lb) lighter today than yesterday does not mean you lost that much fat overnight.

Changes in body weight can come from:

• Body water
• Glycogen and its associated water
• The contents of your digestive tract
• Body fat
• Over the longer term, changes in lean body mass

This means weight changes can have different meanings depending on the timescale.

The scales are useful, but do not automatically treat every kilogram of weight loss as a kilogram of fat loss.

2. Why can your weight drop so quickly when you eat fewer carbohydrates?

For many people, the first step towards losing fat is cutting back on rice, noodles and bread.

A few days later, their weight may drop quickly.

Your body stores some carbohydrate as glycogen in your muscles and liver. When carbohydrate intake falls significantly, glycogen stores may change, along with the water associated with them.

A study in humans found that, during recovery after exercise, each gram of muscle glycogen stored was accompanied by at least approximately 3 g of water. However, this ratio can also be affected by factors such as overall hydration.

So this can happen:

Your weight really has gone down, but that does not mean:

“All the weight I lost was fat.”

This also helps explain why someone might experience:

• Week 1: down approximately 1.8 kg (4 lb)
• Week 2: down approximately 0.45 kg (1 lb)
• Week 3: very little change

This does not necessarily mean your approach to fat loss has suddenly “stopped working”.

Once the more noticeable early changes in water and other short-term factors begin to stabilise, the rate of weight loss may naturally change.

3. Suddenly 0.9 kg (2 lb) heavier today: have you undone all your progress?

You have been watching what you eat for a week.

Then you go out for a meal at the weekend.

The next day:

Up approximately 0.9 kg (2 lb).

Many people immediately think:

“That is it. I ate it all back yesterday.”

But gaining approximately 0.9 kg (2 lb) in one day does not automatically mean gaining that much fat.

Your carbohydrate and salt intake the day before, body water, and even the weight of food and drinks themselves can all affect the number you see the next day.

So:

Do not respond to one sudden increase on the scales by skipping meals or doing large amounts of extra exercise to “compensate”.

One weigh-in is a single data point, not a final verdict on the previous week’s efforts.

4. If you want to lose fat, look beyond today’s weight

There is nothing wrong with checking your weight.

Just avoid only comparing:

Yesterday versus today.

If you choose to track your weight, try to weigh yourself under similar conditions and look at the trend over several weeks:

A slightly higher number today or a lower one tomorrow can both reflect short-term factors.

As well as your weight, consider:

• Has your waist measurement changed?
• Do your clothes fit differently?
• Are you more active day to day?
• Has your fitness improved?

For example, your weight might barely change this week, but a month ago you could only walk for 15 minutes, and now you can consistently manage 30.

That is progress too.

You can keep an eye on your weight, but it should not be the only thing you look at.

5. For fat loss, focus less on losing quickly and more on keeping going

If being approximately 0.9 kg (2 lb) lighter tomorrow does not mean you have suddenly lost that much fat, tomorrow morning’s number should not be your only goal.

You do not need to take the extreme step of cutting out a particular food simply to make the scales drop faster.

Nor do you need to schedule high-intensity exercise every day.

A routine you can repeat over time matters more than occasionally going all out.

5.1 Walking can help you become more active

Exercise does not have to begin with running a 5K.

You can start with 20–30 minutes of walking.

If you do not have a full 30 minutes, split it into 10 minutes in the morning, 10 in the afternoon and 10 in the evening.

The US Centers for Disease Control and Prevention (CDC) recommends at least 150 minutes of moderate-intensity physical activity each week for adults, such as brisk walking. This activity can be spread throughout the week.

The aim is not to find the exercise that “burns fat fastest”, but an activity that:

You can still keep doing next week.

5.2 If you do not want to keep increasing your speed, change the incline

If you can already manage a 30-minute walk consistently, the next step does not have to be going faster and faster.

You can also change:

The incline.

Research shows that increasing treadmill incline while keeping walking speed the same increases oxygen consumption and metabolic demand.

This is where the DeerRun Z10 Pro’s automatic incline of up to 12% can be useful.

Start on the flat or at a low incline, then gradually introduce a moderate incline. Once you have adapted, try alternating between flat and incline walking, rather than setting the treadmill to 12% on your very first session.

If you do not want to make every workout harder simply by increasing your speed, incline offers another option.

But remember:

And 12% is not a target you have to reach. It simply gives you another training variable beyond speed, so you can gradually increase the challenge and energy demands of exercise.

6. Do not let the scales decide how much you eat or exercise today

Losing approximately 1.8 kg (4 lb) in a week can certainly feel encouraging.

But there are more useful questions than “Was all that weight fat?”

• Can you keep eating this way next week?
• Are you moving a little more than before?
• If you used to manage only 15 minutes of walking, can you now complete 30?

The real goal is not to make the scales show a smaller number every single day, but to gradually change the trend over the coming weeks and months.

The Z10 Pro does not offer a “quick fat-burning button”, either.

From walking on the flat to gradually adding incline, it simply allows your training to develop as your ability improves.

So next time your weight suddenly drops, do not rush to count all of it as fat.

And if it suddenly rises, do not immediately dismiss your previous efforts.

Do not focus only on losing weight quickly.

Finding an approach you can keep following matters more.

Don’t Chase a Smaller Number. Build a Routine You Can Keep.