I had no idea about this! I do this all the time too!

3) Potential for Sinus Problems
Whether it is due to dry air or circulating particles, sleeping with a fan directly pointed at you can also lead to nasal congestion or sinus issues. The cool air may cause your nasal passages to dry out, resulting in a stuffed nose or headaches, which can disrupt your sleep.
4) Muscle Stiffness
The concentrated airflow from a fan can cause some muscles to become tense or stiff. This is particularly common if the fan is pointed directly at one part of your body, leading to uncomfortable and painful muscle stiffness upon waking.

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Understanding these points is crucial for your overall health and well-being. While the cool breeze of a fan might seem refreshing, it is essential to weigh these potential drawbacks against the immediate comfort it provides. By doing so, you can create a sleeping environment that truly benefits your health and quality of rest.