By María Carracedo. Fundación INTRAS
We all feel tired from time to time. But when low energy becomes constant, it’s usually a sign that something is out of balance.
Fatigue isn’t a condition on its own. It’s a signal. Your body’s way of telling you that your mental state, physical health, or daily habits need attention.
Mental exhaustion builds up when your brain stays active for too long without proper rest. Over time, this keeps your body in a prolonged stress response. Stress hormones like cortisol remain elevated, and that begins to affect key systems such as digestion, immunity, and sleep.
What starts in the mind doesn’t stay there. It often shows up physically: headaches or unexplained aches, digestive discomfort, getting sick more often, changes in appetite or weight, and that familiar mental fog that makes it hard to focus on even simple tasks.
Energy, however, isn’t just about rest. It also depends on how you fuel your body.
At a cellular level, your energy is produced by mitochondria, which convert nutrients into usable energy. When your diet doesn’t meet your needs, your body has to compensate, and fatigue follows. Chronic stress can make this worse by increasing inflammation and reducing how efficiently your body produces energy.
You don’t need a perfect diet, but a few basics make a real difference. Low levels of vitamin D, iron, or selenium are often linked to fatigue and low mood. Nutrients like omega-3 fatty acids and CoQ10 can help manage inflammation. Staying hydrated is essential, as even mild dehydration can reduce energy levels. Eating at regular times also helps keep your energy and mood more stable throughout the day.
Improving your energy doesn’t require drastic changes. In most cases, small, consistent habits are more effective.
Making space for real rest is a good place to start. That means time without screens or constant input, allowing your brain to reset. A simple bedtime routine can also help. Lower the lights, slow down, and give your body clear signals that it’s time to sleep.
Movement plays a role too. It may seem counterintuitive, but gentle, regular activity like a daily walk can improve mood and help your body manage stress more effectively. And when it comes to food, focusing on simple, whole options is often enough. Foods that come from plants or animals rather than long ingredient lists.
If fatigue persists despite these changes, it’s worth looking deeper. Ongoing exhaustion can sometimes be linked to underlying issues such as thyroid problems or nutrient deficiencies that need proper care.
Feeling constantly tired isn’t something you have to accept. It’s your body asking for attention. Listening to it is the first step toward getting your energy back.
