Why Illness Strikes During Vacation Time
January 3, 2026219 VuesTemps de lecture: 2 minutes
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After weeks of pressure and hard work, many anticipate vacations as a chance to rest and recuperate. However, it is ironic that some individuals experience sudden headaches, intense fatigue, or cold-like symptoms, as if the body has chosen the most inconvenient time to break down.
What is "leisure sickness"?
This phenomenon is referred to by researchers as "leisure sickness," or scientifically, sudden drop effect. It occurs when the body quickly shifts from a state of constant stress to sudden relaxation, disrupting the balance of the immune and hormonal systems.
The role of stress and cortisol
During periods of psychological stress, the body releases cortisol, which acts as a natural anti-inflammatory and pain reliever. This hormone helps the body to cope despite fatigue. However, when relaxation begins, cortisol levels drop rapidly, diminishing the temporary protection it provided, leading to the emergence of symptoms that the body had previously suppressed.
Vacations may contribute to the issue
It is not solely a biological aspect. Vacations often involve travel, changes in sleep patterns, dietary shifts, and interactions with large groups of people. All these factors can weaken the immune system at a time when the body is most vulnerable.
When the mask of resilience falls away
At work, the body operates in a state of constant "emergency," compelling it to endure. When this state abruptly ceases, it begins to exhibit signs of fatigue that were previously hidden, creating the impression that illness appeared suddenly, while it is actually the result of prolonged accumulation.
How to prevent illness during vacations?
Prevention does not start on the first day of vacation but during work itself. Maintaining adequate sleep, a balanced diet, and taking short breaks throughout the day can lessen the shock the body will experience later. It is also advisable to transition gradually into relaxation rather than stopping abruptly, while ensuring proper hydration and engaging in light physical activity.
