Recent research reveals that millions of British residents unknowingly worsen their nighttime hay fever symptoms through common bedroom habits. A comprehensive study examining 1,000 participants discovered that the majority engage in practices that trap allergens, particularly pollen, creating what experts term the 'Pillow Pollen Trap' effect. This phenomenon significantly impacts sleep quality and symptom severity during evening hours, affecting over 8 million people across the UK who report intensified allergic reactions after sunset.

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