07/12/2025
Why Sundays Feel So Exhausting — And What You Can Eat Today to Support Your Energy and Mood
If you’ve ever felt completely wiped out on a Sunday — more tired than any other day of the week — you’re not alone. And it’s not your fault.
As a nutritional therapist specialising in women’s health, I see this “Sunday crash” in so many women going through perimenopause. You’ve spent the week looking after everyone else, juggling responsibilities, and dealing with the ups and downs of changing hormones. By the time the weekend arrives, your body finally drops its guard — and that’s when the exhaustion hits.
Here’s why this happens, and some simple ways you can gently support your energy, mood, and hormones today.
Why Sundays Feel Harder
1. Your stress hormones are catching up with you
All week, your body has been running on adrenaline and stress hormones. By Sunday, those levels drop, and suddenly you feel drained, foggy, or emotional.
2. Perimenopause amplifies fatigue
Fluctuating hormones affect sleep, blood sugar, and mood. What once might have been mild tiredness can now feel overwhelming.
3. Your emotional load is full
Even if you’ve stopped physically, your brain may still be carrying worries, plans, and decisions. That mental load can feel like physical exhaustion.
4. Your body hasn’t switched off yet
Even when you rest, your nervous system may still be in “go” mode. That tension is draining and can make you feel like you can’t truly relax.
How to Support Yourself Today
You don’t need a new routine or a full day of meal prep. Just a few key nutrients, woven into your meals and snacks, can help your body rebalance and feel steadier.
1. Protein — for steady energy
Protein helps stabilise blood sugar and keeps energy levels more even.
Eat more of: eggs, Greek yoghurt, chicken, fish, tofu, beans, lentils, protein-rich soups.
Quick idea: scrambled eggs with spinach, or a lentil soup you can heat up later.
2. Magnesium — to calm your nervous system
Magnesium supports sleep, mood, and muscle relaxation — and stress can deplete it quickly.
Eat more of: leafy greens, pumpkin seeds, sunflower seeds, almonds, black beans, dark chocolate (70%+).
Quick idea: add spinach to lunch, or have a small handful of seeds as an afternoon snack.
3. B Vitamins — for energy and stress support
B vitamins help convert food into energy and support your nervous system.
Eat more of: whole grains, bananas, chickpeas, eggs, salmon.
Quick idea: wholegrain toast with avocado and an egg, or banana with nut butter.
4. Omega-3 fats — for mood and inflammation
Omega-3s help balance mood, reduce inflammation, and support brain health.
Eat more of: salmon, sardines, mackerel (mackerel pâté is a favourite!), chia seeds, flaxseeds, walnuts.
Quick idea: a simple salmon traybake, or chia pudding for breakfast tomorrow.
5. Iron + iodine — for thyroid and energy
Even mild drops in thyroid function can leave you feeling flat.
Eat more of: Iron: spinach, eggs, lentils, lean meat Iodine: seafood, dairy, seaweed
Quick idea: spinach + lentil curry, or a prawn stir fry.
A Kinder Way to Approach Sunday
Instead of using today to catch up, prep, or push yourself, try choosing just one nourishing action:
🌿 A protein-rich lunch
🌿 A walk in the fresh air
🌿 A magnesium-rich snack
🌿 A calm, early-ish dinner
🌿 Switching off from screens for 30 minutes
Tiny choices like this help your body feel safer, steadier, and more supported — exactly what you need heading into a new week.
I’m now taking bookings for my January clinics. If you’re ready to feel calmer, more energised, and more in control of your health, full details can be found on my website - www.donnapetersnutrition.co.uk
If you have a question, please email contact@donnapetersnutrition.co.uk
Photo credit - Donna Peters: My super simple egg muffins, perfect for breakfast or a snack for the whole family.