Placing an air purifier next to your bed can be beneficial if you suffer from allergies, asthma, or are sensitive to airborne particles, as it ensures you breathe cleaner air while sleeping. However, it's crucial to ensure the purifier operates quietly to avoid disrupting sleep and that it's positioned in a way that doesn't directly blow air onto you. Additionally, maintaining a safe distance from the purifier and ensuring it's not obstructed by furniture or bedding will optimize its performance.