Why skipping meals may be wrecking your energy
- MJ Korthals
- May 23
- 9 min read

In today’s fast-paced world, skipping meals has become incredibly normalised.
Some people skip breakfast because mornings feel rushed. Others work through lunch because deadlines pile up. And many intentionally avoid meals altogether because modern diet culture has convinced them that eating less automatically means better health, more discipline, or faster weight loss.
But whilst skipping meals might seem harmless in the short term — or even productive — the reality is that regularly under-fuelling your body is one of the fastest ways to create unstable energy throughout the day.
Skipping meals (and therefore under fuelling) is one of the hidden reasons so many people experience:
afternoon crashes
brain fog
low motivation
cravings
irritability
heavy caffeine reliance
poor focus
Late night binges
So why is it a problem? What’s important to remember is that the body is constantly demanding energy. Even when you are sitting still, your brain, nervous system, organs, muscles, and cells are all working continuously behind the scenes to keep you functioning properly.
So food is not simply “calories” — it is the raw material the body uses to create sustained energy, regulate hormones, support recovery, and maintain cognitive performance. And when those nutrients are not consistently available, the body eventually starts to struggle. The things the body needs to function are simply not there and this becomes a little bit of a problem.
Skipping meals happens to all of us. So, we are not talking about the odd occasion here, that’s fine. It’s the repeated skipping of food, the ‘I don’t have time to eat’ that often accommodates so many busy lives today, where the problem starts to emerge. Couple this with poor quality food, and you can see a problem quickly developing.
The good news is that fixing this usually does not require extreme diets, complicated meal plans, or obsessing over food. We just need some of the basic principles put back in.
And once you understand the basics, stable energy becomes far easier to create.
How the Body Uses Meals for Energy
At the most basic level, the body uses food to produce energy. But the process is far more sophisticated than most people realise.
Every time you eat, your digestive system breaks food down into smaller usable components:
carbohydrates become glucose
proteins become amino acids
fats become fatty acids
These components play different roles in the body. Alongside this, nutrients such as vitamins and minerals are also extracted from the food you eat. Proteins, carbohydrates, fats, vitamins and minerals – these individual food components are what the body uses. Each performing a different role.
In nutrition circles we often bang on about digestion, often the most under-appreciated part of the human body. Digestion is important precisely because it takes the food and turns it into the ‘bio-available’ version that your body can use (glucose, amino acids, fatty acids, bio active vitamins & minerals). And boy, does your body need all of this:
Your brain uses energy to concentrate, think, regulate mood, and maintain focus.
Your muscles use energy to move and stabilise the body.
Your nervous system requires nutrients to communicate properly.
Even your organs and immune system are constantly demanding fuel simply to keep you alive and functioning normally.
This is why highly processed and ‘nutrient poor’ food can be so damaging to your health: You can technically consume enough calories and still feel exhausted if the quality of those foods is poor. Because these foods don’t contain the vitamins and minerals you also need (whilst often containing damaging or even toxic compounds the body has to work to deal with)
Alongside other poor health implications (such as diabetes and heart disease) this is why highly processed diets often create:
unstable energy
cravings
poor focus
fatigue
low satiety
Adding ‘skipping meals because I don’t have time’ on top of this challenge, and you can see how this can quickly become a double trouble kind of problem. One many of us face today.
What Is Fasting (a posh term for skipping meals)?
One of the main reasons people seem to skip meals is ‘because I am fasting’. So let’s explore this fascinating topic.
Fasting has become one of the most popular topics in modern nutrition, but unfortunately much of the conversation around it has become oversimplified and heavily linked to weight loss culture. People now skip meals not because they know about fasting truly, but because they just want to lose weight.
It’s important to recognise that there are cultures and religions that use fasting as a part of their faith practice, and of course the focus on fasting in this blog is not about that. We are talking about the unsafe practice of skipping meals extensively, usually in the pursuit of simply losing weight, and without applying due care to the safe ways to fast and in which circumstances to do so.
In the context we are discussing it then - fasting has been shown to lead to a lower food intake in some cases, often ‘fasting’ when done wrong – eventually leads to rebound eating and can the risk of nutrient deficiency (because poor hunger control is linked to poor food choices).
What is often understand is what fasting actually is, and what it does to the body.
Fasting is simply – going extended periods of time without consuming food or drink (with some exceptions such as herbal tea and black coffee. Water is of course fine). And there are many forms of fasting (too many for this article, so we will just focus on the principle points).
Fasting done safely has been shown to elicit many internal health benefits that are subject of good scientific research. And not just related to weight loss, were talking about cellular health and other biological impacts. But fasting in the modern world focuses just on one thing – weight loss and getting thinner. This is the primary fasting driver for a high percentage of people who do it today.
And this is where the challenges with fasting can come in. Because fasting affects people differently depending on:
stress levels
sleep quality
activity demands
nutrition quality
overall health
recovery status
And this creates the complication. Fasting when stressed and poorly rested or having fuelled poorly say the week before, would likely increase the risk of poor health significantly. For someone who is:
well-rested
properly nourished
metabolically healthy
eating enough overall
fasting may feel relatively manageable.
This is where nuance matters, because that means that fasting is not automatically healthy simply because it is popular. Understanding the difference is important.
Bringing it back to skipping meals then – it’s important to remember: skipping meals can often do more harm than good, certainly in the long term. And this is why we focused a little on fasting – to make this point more clearly, anchored in the science.
You don’t need to skip meals and fast to be healthy and further still, it can create energy debt that is hard to recover.
Why Breaking the Fast Matters (Breakfast)
Breakfast is often treated as optional in modern life, but physiologically it plays a very important role in energy regulation.
After sleeping for 7–9 hours, your body wakes up coming out of a naturally fasted state. During this time, you have gone hours without:
food
hydration
nutrient intake
Yet the moment you wake up, your energy demands immediately begin increasing again.
Your brain starts working. Your nervous system becomes more active. Your body begins preparing for movement, concentration, work, stress, decisions, and physical activity throughout the day ahead.
This makes breakfast a powerful opportunity to:
stabilise blood sugar
improve satiety
support focus
reduce cravings later
provide nutrients for energy production
The problem is that many modern breakfasts are built almost entirely around convenience. Poorly constructed breakfasts that don’t give the body what it actually needs. These breakfasts are often:
refined carbohydrates
sugar
convenience foods
caffeine
So, breakfast is actually super important, as well as that construct of that breakfast. Eating the right food actually does matter, quite a lot as it happens. Something to think about the next time you decide to skip your breakfast for ‘productivity’.
A better breakfast generally contains:
protein
whole-form carbohydrates
fibre
healthy fats
hydration
That combination slows digestion, improves satiety, and creates a steadier release of energy throughout the morning. And importantly, stable mornings often lead to far more stable afternoons too.
The Energy Rollercoaster
One of the biggest problems with skipping meals is that it often creates unstable energy regulation throughout the entire day. As we have already uncovered – breakfast (breaking the fast) is very important for a number of reasons.
The ‘blood sugar’ regulation is one of the most important of them all.
Many people unknowingly live inside a constant cycle of:
under-fuelling (especially early in the day)
becoming overly hungry
grabbing quick processed foods
crashing afterwards
relying on caffeine
craving sugar later
overeating at night
This is the energy rollercoaster. And whilst it has become incredibly common, it is not how the body functions best.
When you go long periods without eating — especially whilst stressed or busy — the body often compensates by increasing stress hormone output to help keep you alert and functioning. Initially this can feel like:
“Pushing through”
Productivity
Appetite suppression
But eventually the crash tends to arrive. This is why many people feel:
exhausted by mid-afternoon
intensely hungry later in the day
mentally foggy
emotionally irritable
On the other hand, balanced meals eaten relatively consistently help create the opposite experience. Instead of sharp peaks and crashes, energy becomes:
steadier
calmer
more predictable
more sustainable
And that is ultimately what most people are actually looking for. The energy roller-coaster is one of the most common signs of energy dis-regulation in today’s modern world. And many people suffer from this feeling.
Nutrient Deficiency: The Hidden Problem With Skipping Meals
One of the biggest issues with regularly skipping meals is that the problem often goes far beyond simply “not eating enough calories.”
When meals become inconsistent, rushed, or heavily restricted, people often begin under-consuming essential vitamins, minerals, fibre, protein, and healthy fats without even realising it. As we’ve already said – this is because hunger that takes over more often than not leads to poor food choices (We’ve all been in the shops when hungry, and massively over purchased!).
And whilst the body is incredibly adaptable in the short term, over time these nutritional gaps can start affecting how efficiently your entire system functions.
This is important because the body does not just need energy from food — it also needs the nutrients that allow energy production to happen properly in the first place. As we already showed: Protein, Carbohydrates, Fast, Vitamins and Minerals. They are all equally important.
Consider this as well. When meal skipping is combined with stress, poor sleep, caffeine reliance, highly processed foods (and therefore nutrient inadequacy) - the body often becomes even more depleted over time.
This is why balanced meals matter so much.
Not because food needs to be perfect. But because consistent nourishment gives the body the raw materials it needs to function properly every single day.
The Weight Trap: Why Skipping Meals Often Backfires
Ironically, many people skip meals because they believe it will help them “eat less” and therefore manage their weight more effectively (hello fasting logic). But in reality, poorly structured eating patterns often create the exact opposite outcome.
When you regularly under-eat earlier in the day — especially breakfast and lunch — the body usually attempts to compensate later. Hunger builds, energy drops, cravings increase, and by the evening many people find themselves:
ravenous
mentally exhausted
craving highly processed foods
overeating late at night
This creates what is essentially a physiological rebound effect.
The body has spent the entire day under-fuelled and stressed, and now it is desperately trying to restore energy intake quickly. And don’t forget, this is hormones and brain chemistry at work – so it is not just a question of ‘will power’.
Think about it, we have evolved to survive, take on energy for when there is scarcity. So if we ‘starve’ ourselves, our primal instincts will always want to take over.
The other problem with skipping meals during the day, and then eating big meals in the evening, is that the evening is generally the point in the day where:
activity levels are lower
energy demands are lower
the body should be preparing for rest and recovery
And if you put lots of food in: not only do you have to digest all of it – the body is wanting to prime itself for rest, and it is the time of day you least need energy. Not only can this contribute to excess calorie intake over time, but it may also negatively impact:
digestion
sleep quality
blood sugar stability
recovery
next-day energy
Large, heavy meals late at night can leave the body working hard digestively when it should be gradually shifting toward: rest, recovery, and sleep physiology.
The goal is simply to fuel the body consistently enough that it no longer feels like it is constantly trying to “catch up” later in the day.
Closing
Skipping meals is not automatically unhealthy. And fasting itself is not inherently bad either.
But there is a huge difference between Intentional nutrition strategiesand chronically under-fuelling your body whilst expecting high energy, focus, and performance.
It’s important to remember that your body requires:
fuel
nutrients
hydration
consistency
recovery
Not perfection. Not extremes. Not endless caffeine and willpower.
For most people, improving energy is less about finding a magic solution and more about returning to simple foundational habits consistently:
balanced meals
better timing (less skipping, more healthy eating)
improved food quality
more intentional nourishment
Food is not the enemy. It is information, support, and fuel for the systems that keep you functioning every day.
That’s exactly why I created a FREE Daily Energy Blueprint Guide — a practical system to help you stabilise your energy using food and habits that actually work.
👉 Download your Free Daily Energy Blueprint here
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