In Malaysia today, one of the most frequent health complaints heard in clinics and coffee shops alike is a persistent, nagging feeling of being constantly tired.
While we often look inward to blame our busy schedules, high-stress jobs or a simple lack of willpower, we usually overlook the environmental architecture of fatigue.
It is becoming clear that our energy levels are not just a reflection of our personal habits, but also a direct response to the world we have built around us.
From my perspective, fatigue is no longer just a medical issue; it is an environmental health challenge.
Factors such as rising temperatures, deteriorating air quality and the way our cities are designed are coming together to drain our collective vitality.
By understanding these external stressors, we can move beyond mere caffeine fixes and start addressing the root causes of our exhaustion.
The heat burden
As global temperatures rise, Malaysia is facing a future of prolonged heat exposure that does more than just cause physical discomfort.
When we talk about environmental health, we must consider how the human body reacts to its thermal surroundings.
To maintain a stable internal temperature, our bodies must work overtime to cool down – a process that happens behind the scenes, but consumes a significant amount of biological energy.
This “hidden work” of the body leads to reduced physical well-being and mental alertness.
Furthermore, the environmental impact of heat extends into our bedrooms.
Hot weather is a primary disruptor of sleep quality, preventing the body from entering the deep, restorative cycles needed for peak daily performance.
When our environment doesn’t allow us to cool down at night, we wake up in a state of “environmental debt”, feeling exhausted before the day has even begun.
The air we breathe
Perhaps the most significant, but invisible, environmental health factor is the relationship between air quality and feelings of fatigue.
While we often think of “air pollution” as something happening outside during a haze episode, our indoor environments are often the primary sources of our grogginess.
Modern urban living in Malaysia often involves moving between a series of “sealed boxes”, which are air-conditioned homes, cars and offices.
This reliance on prolonged air-conditioning exposure and limited fresh air circulation creates a unique environmental stressor.
In spaces with poor ventilation, carbon dioxide and other indoor pollutants build up quickly.
This lack of fresh air doesn’t just make a room feel “stuffy”; it has a direct physiological impact, causing lethargy, a lack of concentration and physical exhaustion.
For many urban residents, what feels like a “mid-afternoon slump” is the body reacting to a lack of clean, oxygen-rich air.
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The urban design trap
Environmental health also encompasses the way our cities influence our behaviour.
Modern urban living has introduced stressors that are hardwired into our daily routines.
For the average urban-dwelling Malaysian, the day is bookended by long commuting hours.
These hours spent in traffic are more than just a waste of time, they represent a source of chronic mental exhaustion due to sensory overload and the stress of navigation.
Paradoxically, the sedentary lifestyle that often accompanies these long commutes and desk-bound jobs makes us more tired.
A lack of movement leads to poor circulation and a drop in metabolic energy, yet the mental strain of the “urban grind” keeps our stress levels high.
This combination of physical inactivity and high mental demand is a recipe for physical and mental exhaustion.
Environmental equity
When we look at this from a public health perspective, it becomes clear that not everyone is affected in the same way.
Some groups face a much higher risk when it comes to environmental fatigue.
For example, outdoor workers spend long hours under the sun and are directly exposed to heat and air pollution.
This can leave them physically exhausted day after day.
Older adults may also struggle more, as their bodies are less able to cope with high temperatures, making them more vulnerable to heat-related fatigue.
Children, on the other hand, are still developing and are more sensitive to poor air quality, which can affect their energy levels, focus and performance in school.
This shows that environmental fatigue is not just about comfort, it is also about health.
Protecting these more vulnerable groups is important, as it helps ensure the well-being of the wider community.
Building personal climate resilience
While many of these challenges require broader changes at the policy and urban planning level, there are still simple and practical steps individuals can take to improve their daily environment.
One of the easiest is to allow more fresh air into your space whenever possible.
Opening windows, even for a short time when outdoor air quality is good, can help clear out stale air and make you feel more alert.
It is also important to create a comfortable sleep environment.
Keeping your room cool and ensuring that there is good air movement, whether through a fan or proper ventilation, can help you sleep more soundly and wake up feeling more refreshed.
During the day, try to avoid sitting for long periods without movement.
Even short breaks to stretch or walk around can improve blood circulation and help you feel more energised.
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At the same time, pay attention to your indoor environment.
Air-conditioning units should be cleaned and maintained regularly, as poorly maintained systems can circulate dust and reduce air quality.
Staying hydrated is equally important, especially in hot weather, as it helps your body cope better with heat and reduces unnecessary fatigue.
These small adjustments may seem minor, but together, they can make a meaningful difference in how you feel throughout the day.
A public health imperative
Feeling constantly tired can be an early warning sign that something in our daily surroundings is not right.
When large numbers of people feel worn out and low on energy, it may reflect deeper issues in how we live, work and design our environments.
Fatigue is not just a personal experience; it can signal a wider public health concern.
A population that is constantly tired is more likely to experience lower productivity, higher stress levels and poorer overall health.
This is why improving our environment matters.
Better ventilation in buildings, more green spaces to reduce heat and cleaner air are not just long-term goals, they are essential steps towards helping people feel healthier and more energised in their daily lives.
We often focus on diet and exercise when we talk about staying healthy, but the spaces we live in are just as important.
The temperature of our rooms, the quality of the air we breathe and the design of our surroundings all play a role in how we feel.
Improving our energy levels does not always start with doing more, it can start with creating a better environment.
By paying attention to these everyday factors, we can support not only our own well-being, but also the health of the wider community.
Dr Nur Azalina Suzianti Feisal is the head of the Management and Science University’s Centre for Climate Resilience and Strategy. For more information, email starhealth@thestar.com.my. The information provided is for educational and communication purposes only, and should not be considered as medical advice. The Star does not give any warranty on accuracy, completeness, functionality, usefulness or other assurances as to the content appearing in this article. The Star disclaims all responsibility for any losses, damage to property or personal injury suffered directly or indirectly from reliance on such information.
