Can your body signals predict your money habits?

How to read what your body is telling you to make smarter money moves.

Fitness and health trackers get you moving. Feeling sluggish? Buzz! One little nudge from a smart watch and you’re off the couch. Fatigue, be gone. 

A ring, watch or app that helps you plan to exercise, feel energised and eat well, does more than power your body; it shifts your mindset. It encourages you to build habits and routines that help you to live your best life and be your best self.

Even if you don’t have a smartwatch or health tech, you know yourself well enough to feel when you’re not at your best. 

It’s worthwhile noticing what your body is telling you because when you feel good, you use your money well. Smart money moves come naturally. It’s a level of self-awareness we can all aspire to, but is it possible to connect your body signals and money behaviour? Let’s find out.

Healthy body, healthy mind, healthy money habits

Your spending habits are a response to your body state, not just your money skills. 

Have you ever noticed how you’re feeling when you overspend, impulsively shop or are in dire need of a “little treat”? 

You’re tired, a sale flashes up on your phone while you’re watching TV, and before you know it, you’ve spent £40 more than you had planned to that day. 

Our bodies can influence our spending much more than we realise, and if you look closely, there are loads of signals which can help you predict your behaviour. 

How can you be more aware of your body, mind and spending, to better understand your financial habits, and cater to your emotions?

How your body states can affect your money decisions

When you’re tired, stressed, emotionally overloaded or hormonally impacted (i.e. during different periods of your menstrual cycle, if you have one), your brain can have less capacity for long-term thinking. 

It might look like lower impulse control, a desire for convenience, or overspending without thinking about the future. 

When your energy is low, or your cortisol (the stress hormone) levels are high, your brain looks for shortcuts as you have fewer mental resources to work with. 

You might seek short-term relief to feel better, and spending money often becomes how you do it. 

You might feel guilty about this kind of spending after periods of stress, tiredness or hormonal changes, but it’s important to remember this is a normal part of being human.

Being aware of these patterns occurring in your body is the first step towards designing better habits around these patterns. 

How to read your signals and respond to them

In 2026, we surveyed 400 UK adults who own wearable tech or track their health data. We found that 57% regularly monitored their health with wearables or apps, and 73% noticed a link between their health data and spending.

Wearables and fitness tech can be used to track your:

• Heart rate: Track your resting or active heart rate, and any irregularities, to give you a sense of your fitness, plus how calm or stressed you are
• Activity: That could be step count, calories burned, and distance travelled, metrics that track your movements
• Sleep: Total sleep time, sleep stages, sleep quality and consistency, plus wake-ups and restlessness
• Recovery: Some wearables give you a stress and energy score, and an indication of how quickly you’ll recover
• Body temperature: If you’re unwell, your wellness tech might be the first to know
• Menstrual cycle: Used for cycle tracking, ovulation monitoring and prediction, hormonal changes and pregnancy insights 

When you have evidence of how your body is responding to your environment or situation, you can take it seriously. 

As an example, if you have evidence that you’re tired, you’ll rest. 

Reflect on your body signals, and what they mean in the wider context of your life, and confident money moves can follow.

If you notice “my heart is racing, I’m stressed,” it could become a trigger for delaying big money decisions and conversations.

An increasing body temperature could indicate a fever or an infection, depleting your critical thinking energy. If you were considering a loan, for example, wait until your body temperature returns to normal before you make a choice.

If your step count is lower this week than usual, you may feel frustrated because you haven’t had as much exercise. Are you more likely to rush decisions? Switching energy providers might not be the best move until you’ve had a run.

Become an expert in reading and understanding your body data and signals to empower your financial life.

What ‘Tired You’ can do to your spending

In our survey, 1 in 5 said they are more likely to spend impulsively when they have a low sleep score, and 29% notice that they are better at sticking to their budget when their sleep or energy stats look good.

Can you put a number on a good night’s sleep? Apparently so. The “tired tax” could cost you £395 a month if you’re   “too exhausted to cook, walk, or return parcels”. 

And we could attribute the spend to fatigue. Our survey found that 21% noticed that when their energy or recovery scores are low, they’re more likely to spend more on conveniences like takeaways or taxis. 

Everyone gets tired

You can predict that you will be tired at some point in the next week, month or year, so reframe that ‘impulsive spend’. 

You know it’s coming, so what can you do about it? 

Making smart money moves when you’re not in top form is all about planning.

Try these ideas out to keep ‘tired you’ from acting impulsively or making big money decisions.

1. Plan when you’re feeling good

Meal prep and plan, set budgets and try spending limits. Build a savings pot specifically for ‘tired days’, and set the expectation that it’s okay to spend when you’ve got no energy left, but it’s controlled and planned for.

2. Automate what you can

Set up standing orders and Direct Debits for your bills and savings to make sure you won’t forget anything when you’re tired.

3. Predict where you can

If you know you’ve got a big week ahead and you can already see yourself feeling drained and splurging on the weekend, ask yourself what you can save now to cater to those costs. 

Could you bring your lunch into work this week instead of buying meal deals and then treat yourself to an Uber home from the office on Friday? 

Try to get as much rest when you can. Sleep is one of the ways to improve your quality of life and make good money moves, but you can’t predict when your music-loving neighbours are going to rave until dawn.

It’s in these moments that you’ll feel better for planning. When your energy levels were high, you set up healthy money habits and routines, so now all you have to do is give yourself a pat on the back.

Do your food habits affect your spending?

You bet. One of the biggest ways we regulate our energy levels and emotions is through food. When we’re hungry or even “hangry” (grumpiness caused by hunger), sometimes quick relief, comfort, and convenience are exactly what we crave. 

This could look like:

• Going to the shops while hungry and overspending on groceries
• Ordering a takeaway because you’re cooking might take too long, or your energy is low
• Buying an unplanned snack or coffee to get through the day

While these choices can set you back if you haven’t planned for them and you’re trying to save, they are normal responses to your body’s need for fuel. 

Your brain shifts into urgent mode when you’re hungry or your blood sugar is low. This in turn causes lower impulse control, reduced patience and an increased desire for food/stuff you might not need to satisfy the cravings. 

So, what can we do to manage our spending when hunger strikes? The good news is that there are some really practical and healthy ways to do this:

• Try to avoid shopping hungry and make a list to stick to before you get there
• Have a nutritious snack ready to go to help keep your mind sharp during the parts of the day when your energy is lowest (track this via your health tracking tools or note it in your phone)
• Meal prep ahead for the days you know you’ll be too busy or tired to cook

In short, making smart money moves doesn’t mean ignoring the nutrition your body needs; it’s about accepting that fact and planning for it.

How your hormones can affect your money habits

If you experience menstruation, you understand how your hormones can impact your day-to-day life throughout your monthly cycle. 

But did you know it could also affect your spending?

Research from the University of Hertfordshire suggests spending behaviour may change during the different stages of the menstrual cycle. 

The study reported that people who menstruate were more likely to overspend and make spontaneous purchases in the 10 days leading up to their period (the luteal phase). 

The study also found that those who overspent reported feeling guilt and shame in the next phase of their cycle. 

If this is a feeling you recognise, there are strategies you can use to blast away shame and feel empowered. One of which is planning.

• Track your cycle (and your spending): Knowing where you’re at hormonally and when you’re more likely to spend can help you understand what is going on in your body and mind before you start tapping your card.
• Budget for it: Allow a small “comfort buffer” during your cycle when you know you could do with some self-love. 
• Increase friction on big buys: Before you click “add to cart”, try to wait 24 hours before you purchase to think about it and lower any impulsiveness you could be feeling.
• Be kind to yourself: The impact of your premenstrual hormones can be intense on the body and mind, so don’t be hard on yourself. 

This isn’t about stuffing down your emotions and restricting your spending; it’s about making space for your feelings without letting them run the show. 

You could also interpret overspending as a confidence boost or a “finally doing the things I want to do” phase. 

Planning for your natural cycle without judgment is a smart move which can allow you to stay in control and still enjoy that chocolate when the cravings hit.

Stress and your spending patterns

Stress has a big impact on spending. 

We found that 30% of people noticed they were more likely to buy a “little treat” when their stress score was high. 

Stress is a natural part of life, and it’s normal to seek anything that makes you feel better (even temporarily), but how we manage those impulses is up to us. 

Here’s how you can use our body signals to better understand your stress and spending patterns.

Become aware of your body

When you feel like doing some unexpected shopping, take note of your heart rate (is it beating quickly and hard?) and your breathing (is it heavy or are you sighing a lot?). These could be signs of stress and might be just the thing to tell you now isn’t the time to browse.

Practise some self-care

If you’re feeling stressed and your body is looking for a hit of dopamine (the happy hormone), look to low-cost activities that you know can make you feel better. Try running a calming bath, doing your favourite exercise or spending time with friends.

Make space for body signals and smart money moves

We can’t predict the future, but we can prepare for how bodies react to it. These kinds of smart money moves aren’t about judging yourself; they’re about looking after the present you and the future you when your body needs it the most. 

That being said, if you’re feeling overwhelmed by your spending or debt and you think you might need some help, don’t hesitate to speak to a loved one you trust or a professional. Organisations like StepChange are here to help you with expert guidance and financial advice on a free and confidential basis.   

For information and support on mental health, head to the Mind website.