The Scales Are Lying To You.

If you’ve ever stepped on the scales after a week of doing everything right — eating better, exercising, getting your steps in — only to see the number go up…

You’ll know the emotional rollercoaster I’m talking about.

I’ve seen it happen with clients.

Someone trains consistently for a couple of weeks. They’re feeling stronger. Sleeping better. Energy is improving. Then they step on the scales… and suddenly all that progress feels like it didn’t happen.

“Jamie, I did all that work and I’ve gained half a kilo.”

Cue frustration.

Here’s the thing though: the scales are one of the worst tools for measuring health progress. Not because weight doesn’t matter at all — but because the number on the scales tells such a tiny part of the story.

And if you rely on it too heavily, it can completely mess with your motivation.

So let’s talk about why the scales are such a poor indicator of progress, what actually affects your scale weight, and why tracking habits is a much better approach.

Because if your goal is long‑term health, strength, and confidence… the scales are often pointing you in the wrong direction.

And yes, even I have been guilty of using the scales too much on myself in the past!

WHY THE SCALES ARE A BAD IDEA FOR MEASURING PROGRESS

The scales measure one thing.

Your total body weight at that moment.

That’s it.

They don’t tell you:

• how much muscle you’ve gained 

• how much fat you’ve lost 

• whether your fitness is improving 

• whether your sleep is better 

• whether your mental health has improved 

• whether your habits are becoming healthier 

All they show is gravity pulling on your body at that exact moment in time.

And the frustrating part is that weight fluctuates constantly.

Research shows body weight can vary several kilograms within a single week due to factors unrelated to fat gain or loss (Hall et al., 2012).

So someone can be making fantastic progress with their health while the scales bounce around randomly.

Which means the feedback you’re getting from the scales is often misleading.

WHY YOUR SCALE WEIGHT CAN CHANGE SO MUCH

Let’s look at just a few of the things that can change your body weight from one day to the next.

And some of these might surprise you.

WATER RETENTION

Water is the biggest one.

Your body stores water in response to things like:

• salt intake 

• carbohydrate intake 

• stress 

• sleep quality 

• exercise 

After a tough strength workout, your muscles actually hold onto extra water as part of the recovery process.

Which means the day after a good workout… your weight might go up.

Not because you gained fat.

But because your body is repairing itself.

GLYCOGEN STORAGE

When you eat carbohydrates, your body stores them as glycogen in the muscles and liver.

Each gram of glycogen is stored with roughly three grams of water (Olsson & Saltin, 1970).

So if someone increases their carb intake — which often happens when people start training — the scales might jump up a little.

Again, not fat gain. Just normal physiology.

DIGESTIVE CONTENT

This one’s less glamorous but still important.

Food literally has weight.

If you weigh yourself before breakfast one day and after dinner the next, the number will obviously be different.

Your digestive system can easily account for a kilogram or more of fluctuation.

HORMONES

Hormonal fluctuations can also influence body weight.

This is particularly noticeable for women across the menstrual cycle, where fluid retention can cause temporary increases in weight (Trexler et al., 2014).

Again, completely normal.

But incredibly frustrating if the scales are your only progress measure.

WHY THE SCALES CAN MESS WITH YOUR MIND

One of the biggest problems with relying on the scales is psychological.

When people see the number go up, they often assume something has gone wrong.

Even when everything is going right.

This can lead to:

• discouragement 

• giving up too early 

• over‑restricting food 

• training too aggressively 

And ironically, those reactions can make progress harder.

From a mental health perspective, constantly checking scale weight can also create unhealthy relationships with exercise and food.

Which is something I’m very careful about when coaching clients.

Because the goal of exercise isn’t just physical health.

It’s mental wellbeing too.

WHAT RESEARCH SAYS ABOUT TRACKING HABITS

One of the most consistent findings in behaviour change research is that focusing on habits — rather than outcomes — leads to better long‑term results.

Habits are the daily behaviours that eventually create change.

Things like:

• exercising regularly 

• walking more 

• eating balanced meals 

• sleeping enough 

• managing stress 

Research on behaviour change shows that tracking habits significantly increases the likelihood of maintaining those behaviours over time (Michie et al., 2009).

Which makes sense.

You can’t control the number on the scales directly.

But you can control your daily habits.

And when those habits are consistent, results follow naturally.

WHAT I GET CLIENTS TO TRACK INSTEAD

Instead of obsessing over scale weight, I often encourage clients to track simple habits.

Things like:

• number of workouts completed 

• sleep habits 

• stress management 

• eating healthy snacks

• eating vegetables regularly 

These behaviours are actually within someone’s control.

And they give much more meaningful feedback about progress.

When someone can look at their week and say:

“I trained three times, walked most days, and slept better.”

That’s genuine progress.

Even if the scales didn’t move.

HOW TO TRACK HABITS EFFECTIVELY

Habit tracking doesn’t need to be complicated.

In fact, the simpler it is, the better.

Some people use:

• a habit tracking app 

• a notebook 

• a whiteboard 

• a printed chart on the fridge 

The goal is simply to record when you complete the behaviours you want to build.

Tick the box.

Colour in the square.

Mark the day.

It might sound simple, but it’s surprisingly powerful.

Because seeing a streak of completed habits builds momentum.

WHY REWARDS HELP BUILD CONSISTENCY

Another powerful strategy is rewarding yourself when you stick to your habits.

Now I’m not talking about punishing workouts or extreme diets.

I mean positive reinforcement.

Small rewards can help reinforce behaviours that lead to long‑term change.

Examples might include:

• buying new gym gear after a month of consistent training 

• treating yourself to a nice coffee after a workout 

• planning a relaxing activity after completing your weekly sessions 

Behavioural psychology shows that positive reinforcement increases the likelihood of repeating a behaviour (Skinner, 1953).

In plain English: when something feels rewarding, we’re more likely to keep doing it.

And consistency is the real key to health progress.

HOW THIS FITS INTO MY COACHING PHILOSOPHY

One of the biggest things I try to teach clients is patience.

Real fitness progress takes time.

And it’s built through small habits repeated over weeks, months, and years.

Not through dramatic short‑term changes.

When someone focuses on habits instead of scale weight, something interesting happens.

They stop chasing quick results.

And start building sustainable ones.

Which is exactly what we want.

FINAL THOUGHTS

If the scales are your main way of measuring progress, you might be setting yourself up for unnecessary frustration.

Because the scales don’t show:

• improved fitness 

• better sleep 

• stronger muscles 

• better mental health 

• healthier habits 

And those are the things that actually matter.

So instead of asking:

“What does the scale say today?”

Try asking:

“What habits did I build this week?”

Because habits create results.

The scales just measure gravity.

And gravity is not the best judge of your progress.

REFERENCES

Hall, K. D., et al. (2012). Quantification of the effect of energy imbalance on bodyweight. The Lancet.

Michie, S., et al. (2009). Effective techniques in healthy eating and physical activity interventions. Health Psychology.

Olsson, K. E., & Saltin, B. (1970). Variation in total body water with muscle glycogen changes. Acta Physiologica Scandinavica.

Skinner, B. F. (1953). Science and Human Behavior.

Trexler, E. T., et al. (2014). Metabolic adaptation to weight loss. Journal of the International Society of Sports Nutrition.