Why you’re always tired: The nutrition mistakes we see every day!
Feeling tired all the time is one of the most common concerns we see in clinic.
It’s easy to blame poor sleep, stress, or a busy lifestyle — and while these all play a role, nutrition is often the missing piece.
If you’re relying on coffee to get through the day, crashing mid-afternoon, or feeling flat during training, your daily eating habits may be working against you.
Here are the most common nutrition mistakes we see — and what you can do to fix them.
1. Not Eating Enough (Especially Carbohydrates)
One of the biggest issues we see is under-fuelling.
This is common in people trying to lose weight, eating “too clean,” or simply not having time to eat properly.
Carbohydrates are your body’s primary source of energy. Without enough:
Energy levels drop
Concentration declines
You feel flat and unmotivated
What can help:
Include carbohydrates at each meal (e.g. oats, toast, rice, wraps, fruit). We don’t want to see huge amounts of these, but if you’re having a salad - Mix in some cold pumpkin or sweet potato or throw in some quinoa and brown rice. Legumes can also be a great addition.
Avoid skipping meals
Match your intake to your activity levels
2. Too Little Protein Across the Day
Many people either don’t eat enough protein, or only include it at dinner.
Protein plays a key role in:
Sustaining energy
Supporting muscle repair
Keeping you full between meals
What can help:
Aim to include protein at every meal
Spread intake evenly across the day
Simple options:
Breakfast: eggs, Greek yoghurt, protein smoothie
Lunch: chicken, tuna, leftovers
Snacks: yoghurt, nuts, cheese, boiled eggs
3. Skipping Meals or Long Gaps Between Eating
Going long periods without eating can lead to dips in blood sugar, leaving you:
Tired
Irritable
Craving sugar
This often leads to the classic afternoon energy crash guess what comes next… You got it - the cookie jar or your co-workers chocolate draw.
What can help:
Eat every 3–4 hours
Plan snacks ahead for busy days
Focus on consistency rather than perfection
4. Low Iron Levels
Low iron is a common cause of fatigue, particularly for:
Women
Endurance athletes
Busy individuals with high demands
Younger athletes increasing their training
Symptoms may include:
Persistent tiredness
Poor concentration
Reduced exercise performance
Feeling like you’re never fully rested
What can help:
Include iron-rich foods such as red meat, chicken, fish, legumes and leafy greens
Pair plant-based iron sources with vitamin C (e.g. citrus, capsicum)
Speak with your GP if symptoms persist - You may need to start thinking about an iron supplement
5. Dehydration
Even mild dehydration can impact:
Energy levels
Focus and concentration
Physical performance
In warmer climates like Far North Queensland, hydration needs are even higher.
What can help:
Drink fluids regularly across the day
Don’t rely on thirst alone
Consider electrolytes if you’re active, sweating heavily, or working outdoors
If you’re fit and healthy, active, sweating lots, don’t have issues with blood pressure or any other medical conditions, there can even be an indication to add salt to your meals.
6. Relying on Sugar and Caffeine for Energy
Coffee, energy drinks and sugary snacks can provide a quick boost — but this is often followed by a crash.
This creates a cycle of:
Low energy → quick fix → crash → repeat
What can help:
Build meals around balanced nutrition (protein, carbs, fats, fibre)
Use caffeine strategically, not constantly
Focus on steady energy rather than quick spikes
7. Poor Meal Balance
Even when eating regularly, meals that lack balance won’t keep you energised.
Meals that are too high in refined carbohydrates or low in protein and healthy fats can lead to short-lived energy.
A simple way to build meals:
Protein (meat, eggs, dairy, legumes)
Carbohydrates (grains, fruit, starchy vegetables)
Healthy fats (nuts, seeds, avocado)
Fibre (vegetables)
What This Looks Like in a Day
Breakfast:
Eggs on toast with fruit
Lunch:
Chicken wrap with salad and yoghurt
Snack:
High protein yoghurt + 20g mixed unsalted nuts or low sugar granola mixed in
Dinner:
Beef stir-fry with rice and vegetables
The Bottom Line
If you’re constantly feeling tired, it’s not always about doing more — sometimes it’s about fueling better.
The most common issues we see include:
Not eating enough
Skipping meals
Low iron
Dehydration
Poor meal balance
The good news is these are all practical, fixable changes.
Book an appointment online today and learn how nutrition can become one of your most powerful tools for performance.
We understand that nutrition isn’t one-size-fits-all. Our Cairns, Atherton and Mareeba dietitians provide personalised, practical nutrition advice to help you reach your goals while still enjoying food.