According to Public Health France, nearly one in three adults report feeling persistent fatigue on a daily basis, with no obvious cause identified. In response to this, many people embark on personal experiments to try to understand the source of their exhaustion. This is exactly what a man did, convinced that a single daily habit was to blame for his energy decline. His plan: completely eliminate it for seven days and observe the results. What he found at the end of that test week, however, had little to do with his initial hypotheses, and it even steered him toward a possibility he hadn’t considered.
A Week Without This Habit: The Challenge Launched to Regain Energy
Like many French people, this man in his thirties spent his days with a sense of chronic fatigue, even after nights that seemed sufficient. After several weeks of feeling flat, he decided to conduct his own investigation into his lifestyle. His choice fell on a habit he deemed suspicious: screens viewed late at night, just before sleep. Convinced that the blue light from his phone disrupted his sleep and thus his energy level, he made the radical decision to ban any screen after 9 p.m. for seven consecutive days. The objective was clear: gradually regain vitality, sleep better, and wake up rested at last. This hypothesis seemed logical, given how screens are regularly singled out in sleep-related recommendations. It was therefore a simple test, but carried out with daily discipline, noted each evening in a small notebook to track its progression.
The Verdict After Seven Days: Fatigue Is Still There, Against All Odds
At the end of the week, the time for assessment arrived. And the finding was fairly disappointing: no significant improvement was felt. Despite strict discipline, with no gaps, the morning fatigue remained as it had in the previous weeks. Worse still, on some days the exhaustion seemed even slightly more pronounced, with no obvious link to the absence of screens. This result sowed doubt.
The initial hypothesis, which had seemed coherent, no longer held up. This personal experiment illustrates a reality often overlooked: fatigue can have multiple and sometimes invisible origins, far from the habits we suspect first. Focusing on a single factor, no matter how plausible, does not always solve the problem. It’s this dead end that pushed the man to seek an answer elsewhere, this time on the side of a healthcare professional rather than mere self-observation.
The Real Culprit Revealed by a Blood Test
Faced with this dead end, the most reasonable decision became clear: consult a doctor for a blood test. This appointment, often postponed due to lack of time or unfamiliarity with its usefulness, proved decisive. The physician prescribed a comprehensive analysis including iron levels, vitamin D, and thyroid function, three elements frequently linked to persistent fatigue when imbalanced. The results revealed an unsuspected deficiency, finally explaining the lingering exhaustion that neither sleep nor daily habits could fix. This discovery allowed the fog to lift and prompted a tailored approach, far more effective than any single behavioral change. This experience underscores a key limit of self-diagnosis: one can keep changing habits without ever addressing the true cause of physical discomfort. Medical advice, supported by precise tests, often remains the best path to understanding the real origin of fatigue that settles in over time.
This story, as simple as it may seem, resonates with the everyday lives of many people who try to adjust their lifestyle without lasting success. As autumn approaches—a period when fatigue tends to intensify with changes in light and rhythm—it may be useful not to settle for guesses. Before banning coffee, screens, or sugar for weeks on end, a simple blood test can sometimes save valuable time and identify the true origin of the problem. So, if your fatigue persists despite all your efforts, perhaps it is time for you, too, to consult rather than keep guessing?
