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In the summer, the weather is hot and humid, so many people need to use a fan and turn it on continuously throughout the night while sleeping. However, this action if done for a long time will unintentionally harm your health. Dry nose and mouth: Turning on a fan can cause sweat and moisture to evaporate significantly faster, which in turn leads to dehydration, dry mouth and nasal passages.

Causes body aches: when you sleep when you let the fan blow directly on your body, in the morning you often feel sore. Because when the fan is turned on, the cool air concentrates on one place, making the muscles in that place tense.

Sinus irritation: the constant flow of air from the fan tends to dry out the nasal passages, affecting the sinuses. If it’s too dry, the body is forced to produce more mucus, leading to more congestion, nasal congestion, and sinus headaches.

Exacerbation of allergies: The wind generated by a fan can help circulate allergenic particles, increasing the risk of diseases such as asthma, dry eyes, eye allergies.

Easy to cause cramps: the temperature at night tends to drop quickly, while exposure to cold is one of the causes of muscle cramps. Furthermore, on hot nights, the air blowing from the fan can raise the body’s basal temperature, which can easily lead to heat-related ills, such as nausea or headaches.

If you can’t sleep without a fan, you can consider adopting the following alternatives to minimize the negative effects of using a fan when sleeping:

• Keep the fan away from you (at the foot of the bed or at body level, about 2m away from your body) to avoid nasal congestion, headaches, muscle aches and dry eyes.
• Use the fan on rotation so that the wind can spread evenly throughout the room.
• Set a timer, let the fan turn itself off for an hour or so after going to bed.
• The fan should be turned on at minimum speed while sleeping