Why Your Energy Crashes After 40, And How to Honour Your Body Through It
Your body has a right over you. That is not a suggestion — it is a hadith. For Muslim women over 40 who have spent years pouring from an empty cup, this post is both a practical guide to understanding your energy and an Islamic permission to finally care for yourself properly.
Umm Sumaya
6/8/20269 min read
You used to be able to do it all.
Long days, late nights, early mornings. Your body kept up. It was just what you did.
And then somewhere around 40 something shifted. The energy that used to be reliably there started disappearing at inconvenient times. The afternoon slump became a wall. The morning that used to feel manageable started requiring more effort to get through. Sleep stopped being the reset it once was.
If you have been telling yourself this is just tiredness, just stress, just a busy season that will pass, this post is a gentle but honest interruption.
What you are experiencing is real. It is physiological. It has a name. And there are practical, grounded things you can do about it that do not involve pushing harder, doing more, or feeling guilty about the energy you no longer have.
More than that, there is an Islamic lens on all of this that changes not just what you do but why you do it. Because caring for your energy after 40 is not vanity. It is stewardship. It is the honouring of an amanah.
What Is Actually Happening in Your Body After 40
The energy changes that happen to women in their 40s are not imagined and they are not a sign of weakness. They are the direct result of hormonal shifts that affect almost every system in the body.
The primary driver is the fluctuation and gradual decline of oestrogen and progesterone during perimenopause. These are not just reproductive hormones. They are involved in energy regulation, sleep architecture, mood, cognitive function, insulin sensitivity, and the body's ability to manage stress. When they begin to shift, the effects are felt across the entire body.
The Main Changes That Affect Energy
• Disrupted sleep. Falling oestrogen affects the quality of deep sleep, even when the number of hours looks adequate. You may be sleeping but not restoring. This is one of the most common and least acknowledged contributors to perimenopausal fatigue.
• Blood sugar instability. Declining oestrogen reduces insulin sensitivity, which means the body handles glucose less efficiently. The result is more pronounced energy spikes and crashes after meals, stronger cravings, and a greater tendency toward reaching for quick comfort foods.
• Thyroid sensitivity. Perimenopause can trigger changes in thyroid function for some women, further affecting energy, metabolism, and mood.
• Increased cortisol sensitivity. The stress response becomes more reactive during perimenopause. What used to feel manageable can start to feel genuinely overwhelming, and the body takes longer to recover from stress.
• Nutritional depletion. Women in their 40s who have spent years prioritising everyone else's needs often arrive at this stage with depleted iron, vitamin D, magnesium, and B vitamins. Each of these plays a direct role in energy production.
Understanding this is not about finding excuses. It is about responding to what is actually happening rather than pushing through it as if nothing has changed. The body has changed. Responding with awareness and intention is not weakness. It is wisdom.
The Amanah of Your Energy, An Islamic Perspective
Before we talk about what to eat and how to move, we need to establish the frame that gives all of it meaning.
In Islam, the body is an amanah, a trust. It does not belong to you. It was given to you by Allah, and you will be asked about how you cared for it. This is not a metaphor. It is a theological reality with practical implications for every choice you make about your health.
"Your body has a right over you."
— Sahih al-Bukhari
This hadith is deceptively simple. Your body has a right over you. Not a preference. Not a suggestion. A right. When you repeatedly override the signals your body is sending, when you deprive it of nourishment and rest and movement, you are not just harming your health. You are neglecting an amanah.
For many Muslim women, this reframe is quietly radical. We have been taught to pour from an empty cup, to keep going regardless, to treat self-care as indulgence. The deen says otherwise. Caring for the body that Allah entrusted to you is an obligation, not a luxury.
This matters specifically for the energy conversation because many sisters push through exhaustion out of a sense of duty. The children need feeding. The home needs managing. The work needs doing. There is no time to rest. But a body running on depleted reserves does not serve the deen well. It does not have the energy for khushu in salah. It does not have the patience for the people in its care. It does not have the clarity for the decisions it needs to make.
Honouring your energy after 40 is not self-indulgence. It is what makes sustained, sincere service to Allah and the people around you possible.
Is the way you are living honouring the amanah of your body?
The Imaan Reset System is a free guide for Muslim women over 40 who want to reconnect their daily habits to their deen, understand the patterns keeping them stuck, and begin caring for themselves with intention rather than guilt.
It is completely free and a grounded place to begin.
#08184aFood, Blood Sugar and Energy, What to Understand First
The single most impactful dietary change a woman over 40 can make for her energy is to stabilise her blood sugar. This one shift has knock-on effects across cravings, mood, sleep, weight, and the tendency toward emotional eating.
Blood sugar instability in perimenopausal women is common, often unrecognised, and closely connected to the energy crashes that feel so debilitating. Here is what drives it and what helps.
What Destabilises Blood Sugar After 40
• Refined carbohydrates eaten without protein or fat. White bread, cereals, biscuits, crackers, sweetened drinks. These spike blood sugar rapidly, trigger a strong insulin response, and leave energy lower than it was before eating.
• Long gaps between meals without adequate nourishment. Skipping breakfast or eating very lightly early in the day often leads to a crash by mid-morning or early afternoon.
• High caffeine intake without food. Caffeine raises cortisol, which raises blood sugar, which triggers an insulin response, which leads to a crash. Many women over 40 are inadvertently making their energy worse with the coffee they are relying on to get through the day.
• Chronic under-eating of protein. Protein is the macronutrient most directly responsible for sustained energy and satiety. Women who eat too little protein spend the day managing blood sugar crashes without understanding why.
• Chronic stress. Elevated cortisol from sustained stress directly disrupts blood sugar regulation. This is why stress management is not separate from energy management for women in perimenopause. They are the same conversation.
What Stabilises Blood Sugar After 40
•Protein at every meal. Aim for a meaningful portion of protein at breakfast, lunch, and dinner. Eggs, fish, chicken, legumes, Greek yoghurt. Protein slows glucose absorption and sustains energy across the hours after eating.
•Fibre-rich vegetables with meals. Vegetables slow the release of glucose from the meal. They also feed the gut microbiome, which plays a role in hormonal health during perimenopause.
•Healthy fats alongside carbohydrates. Olive oil, avocado, nuts, and seeds slow glucose absorption and provide the fat-soluble nutrients that support hormonal function.
•Eating within an hour of waking. Breaking the overnight fast early stabilises cortisol and sets the blood sugar rhythm for the rest of the day. Many women who struggle with afternoon energy crashes are starting the day in a way that makes those crashes almost inevitable.
•Reducing refined sugar and highly processed foods. Not eliminating, not restricting. Reducing. The goal is blood sugar stability, not dietary perfection.
Sleep, Rest and the Muslim Woman Over 40
No nutritional strategy will compensate for consistently disrupted sleep. Sleep is where the body repairs, where hormones are regulated, where the brain consolidates memory and clears metabolic waste. For women in perimenopause, whose sleep architecture is already being affected by hormonal changes, this is not a peripheral issue. It is central.
And yet sleep is often the first thing sacrificed. Late nights scrolling, waking in the early hours and lying awake, the 5am alarm that does not care that you did not fall asleep until 1am.
What Disrupts Sleep for Women Over 40
• Night sweats and temperature dysregulation from fluctuating oestrogen.
• Elevated cortisol from unmanaged stress, which disrupts the natural cortisol decline needed for sleep onset.
• Blood sugar instability during the night, which can cause waking in the early hours.
• Screen exposure in the evening, which suppresses melatonin production.
• Eating too close to bedtime, particularly high-sugar or high-carbohydrate meals.
What Supports Sleep for Women Over 40
• A consistent sleep and wake time, even at weekends. The body's circadian rhythm responds strongly to regularity.
• Reducing screens in the hour before sleep. This is not a new recommendation but it remains one of the most impactful.
• A light protein-containing snack before bed if you are waking in the early hours. A small handful of nuts or a little Greek yoghurt can stabilise blood sugar overnight.
• Magnesium. This is one of the most commonly depleted minerals in women over 40 and one of the most supportive of sleep quality. Magnesium glycinate before bed is well tolerated by most women.
• The Islamic practice of the bedtime adhkar. The adhkar before sleep are not only spiritually grounding. The practice of slowing down, making wudu, reciting, and releasing the day to Allah is one of the most effective wind-down rituals available. It is already in the deen. It simply needs to be used.
Rest also extends beyond sleep. The body needs periods of genuine rest throughout the day. Not scrolling. Not passive consumption. Actual rest. For Muslim women, the space around salah is a natural container for this if we allow it to be. The five prayers are not interruptions to the day. They are the structure that prevents the body from running without pause from morning until night.
Five Practical Changes to Begin This Week
This is not a complete overhaul. It is five starting points rooted in what the research and the deen both support. Pick the one that feels most accessible and begin there.
1.Add protein to your breakfast. Before anything else changes, eat a breakfast that contains a meaningful amount of protein. Eggs, Greek yoghurt, smoked salmon, ful medames. This one change stabilises the blood sugar rhythm for the entire day and reduces the afternoon crash significantly.
Walk for ten minutes after your main meal. You have already read about this in the previous post but it belongs here too. Post-meal walking is the simplest blood sugar tool available and it requires no preparation. Set the intention, make it sunnah, and walk.
Set a consistent sleep time for five consecutive days. Not a perfect sleep routine. Just a consistent time to be in bed with the phone in another room for five days. Notice what happens to your energy by day four and five.
Replace one refined carbohydrate with a wholefood alternative this week. Not all of them. One. White rice becomes brown rice or cauliflower rice. The afternoon biscuits become a handful of almonds and a piece of fruit. One swap, sustained, builds the evidence that change is possible.
Use the bedtime adhkar with intention tonight. Slow down. Make wudu. Read Ayatul Kursi, the three Quls, and blow over your hands and body as the Prophet taught. Release the day. This is both deen and nervous system regulation. It costs nothing and it works.
Consistency with small changes outperforms perfection with large ones every single time. The nafs al-ammara will tell you that these changes are too small to matter. It is wrong. The body responds to care. Even a little. Even imperfectly. Even now.
A Word for the Sister Who Is Running on Empty
If you are exhausted and you have been exhausted for a long time, the first thing to hear is this: you are not lazy. You are not failing. You are a woman in a demanding season of life, in a body that is going through significant changes, likely carrying more than your share of responsibility, and probably putting yourself last on a list where you should be somewhere in the middle at minimum.
The changes in this post are not asking you to add more to your plate. They are asking you to tend to the plate you already have. To nourish the body Allah gave you. To sleep as an act of obedience. To eat as an act of gratitude. To rest without guilt because the body that has been given to you in trust deserves that much.
Your energy matters. Not because of what it allows you to produce. Because you are an amanah. And you deserve to be cared for.
Your body has a right over you. Begin there.
والله أعلم — And Allah knows best
Ready to begin reconnecting your health to your deen?
The Imaan Reset System is a free guide for Muslim women over 40 who want to understand the patterns keeping them stuck, reconnect their daily habits to their intentions, and begin caring for themselves with sincerity rather than guilt.
Download it free and begin where you are.