Why You Get Sick When You Finally Take Time Off
Many people fall ill shortly after starting vacation due to accumulated stress finally catching up with their body. The "let-down effect" causes previously suppressed immune symptoms to surface when stress hormones drop and the body shifts
Have you experienced it? You work hard for weeks without getting sick, but the moment you send that out-of-office message, close your laptop, and begin your long-awaited vacation, you develop a sore throat, congestion, headache, or full-blown cold. This shouldn't happen during what should be your body's most restful period. You're not alone—experts call this "Leisure Sickness" or "vacation illness."
The phenomenon recently went viral after body awareness instructor Liz Tenuto posted a TikTok explaining why many hardworking, ambitious women tend to catch colds on day two of vacation. During work, the body operates under continuous stress, maintaining high cortisol levels that keep it performing despite exhaustion. When you finally relax, "your body sends the signal that it can't continue anymore."
Tenuto explains this as the "let-down effect." During prolonged stress, the body's stress-response systems suppress immune and inflammatory functions to maintain performance. When stress ends and the body shifts into recovery mode, previously suppressed symptoms become noticeable. Relaxation doesn't make you sick—it simply allows your already-depleted body to finally show how exhausted it truly is.
The post generated thousands of comments, with many sharing similar experiences. Some reported getting sick every time they took extended breaks since childhood, while a teacher revealed she invariably falls ill on day one or two of school holidays, requiring a full week to recover.
Dr. Henry Lederer, Chief Medical Officer at Restore Hyper Wellness, clarifies that vacation itself doesn't cause illness, but rather the effects of accumulated stress. Sustained stress keeps the body in "fight-or-flight" mode under cortisol and adrenaline, leading to sleep deprivation, immune changes, and pushing through fatigue signals. When stress drops rapidly during vacation, the body becomes more aware of these abnormalities, triggering inflammatory responses.
