But experts emphasize an important distinction: **correlation is not causation**.
Long naps may not *cause* health problems. Instead, they may be a sign of underlying issues like poor nighttime sleep, chronic illness, depression, or sleep disorders.
Short, intentional naps taken by otherwise healthy individuals do **not** appear to carry the same risks—and may even support cardiovascular health by reducing stress.
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### **Naps vs. Night Sleep: Not a Replacement**
One crucial piece of news for nap lovers: **naps are a supplement, not a substitute**.
While naps can help reduce sleep debt and improve short-term performance, they don’t fully replace the restorative processes of deep nighttime sleep. During overnight sleep, your body performs essential tasks like tissue repair, immune strengthening, and hormonal regulation.
If you rely on naps because you’re consistently short on nighttime sleep, it’s worth addressing the root cause rather than treating naps as a workaround.
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### **Why Naps Are Becoming More Accepted at Work**
Interestingly, workplaces are starting to catch up with the science.
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