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Cold air blowing directly on your body for hours can sometimes cause muscle tightness or stiffness, particularly in the neck and shoulders. This may explain why you wake up sore even after a full night’s sleep.

Increased Exposure to Allergens

Certain sleep habits can stir up dust, pollen, or pet dander in your room. Breathing these in overnight may trigger sneezing, itchy eyes, or mild congestion—especially for people with allergies or sensitive airways.

When It’s Not All Bad

Not all sleep habits are harmful. Some people sleep better with background noise, airflow, or a familiar bedtime routine. The key is balance and awareness—paying attention to how your body responds.

Tips for Healthier Sleep