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on energy
On Vitality

on energy

5 min readTheresaMarch 2026
“What if the tiredness isn't about needing more rest, but about finally being honest about what's taking it?”

Energy is the thing women talk about wanting back. Not the frantic, caffeinated version they ran on for years, but something steadier and more reliable. The kind that makes a full day feel possible rather than something to get through.

What most people don't realize is how many different things are draining it. Sleep is the obvious one, and it matters enormously. But energy is also shaped by what you eat and when, by how much you move and how much you rest, by the chronic low-level stress that hums in the background of a busy life, and by nutritional deficiencies that are remarkably common and remarkably underdiagnosed. Fatigue has causes. It isn't just a feature of getting older.

The relationship between energy and hormones is real and worth understanding. Hormonal shifts affect metabolism, sleep quality, mood, and the body's ability to recover from exertion. Many women describe a period of feeling inexplicably tired, as though the energy they used to have has simply gone somewhere else. Often it has, and often there are things to be done about it.

Movement is one of them, which is counterintuitive when you're already tired. But the research is consistent: regular moderate movement increases energy over time rather than depleting it. The key word is regular. A walk you take every day does more for your energy than an intense workout you do once a week and spend three days recovering from.

Food matters too, and not in the way the diet industry has spent decades insisting. Eating enough protein, keeping blood sugar reasonably stable, and not running a caloric deficit you can't sustain are the foundations. Most of the elaborate systems women have tried over the years are variations on these basics, dressed up in more complicated language.

The other thing worth naming is the energy cost of carrying things you haven't put down. Unresolved tension, obligations you've agreed to but don't want, relationships that take more than they give. These are real drains, and no amount of sleep or supplements fully compensates for them. Energy management is partly physical and partly a question of what you're choosing to carry.

What would it feel like to have enough energy for the things you care about? Not boundless, not the way it was at twenty-five, but enough. That's a reasonable goal. And it's more achievable than most women believe.

Questions Worth Asking

Why do women experience fatigue and what can be done about it?

Fatigue has several common causes: hormonal changes, disrupted sleep, thyroid dysfunction, iron deficiency, and vitamin D insufficiency. It's worth getting bloodwork done before assuming tiredness is simply a feature of aging. Many of the most common causes are treatable, and identifying the specific cause makes the solution considerably more targeted.

How do women get their energy back?

The most effective interventions depend on the cause, but the foundations are consistent: prioritizing sleep quality, eating enough protein, incorporating regular movement even when energy is low, managing stress, and addressing any underlying hormonal or nutritional deficiencies. Many women also report significant improvement after addressing their relationship with caffeine, which can disrupt sleep quality and create an energy debt over time.

What nutrients support energy in women?

The nutrients most commonly associated with fatigue are iron, vitamin D, vitamin B12, and magnesium. Deficiencies in any of these can cause significant energy depletion. A comprehensive blood panel is the most reliable way to identify what's low rather than guessing. Supplementing without knowing your baseline can be ineffective and occasionally counterproductive.

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