Though air purifiers can’t clean everything in the air, they can help filter dust, pollen, smoke, and dander, all of which can affect your breathing at night. Light exposure too late in the day or at night may suppress the signal to produce melatonin. Your brain then signals to the body to produce melatonin, a hormone that helps regulate your sleep. Limiting light exposure at night tells your brain it’s time to sleep.
If you live in an area with high levels of light pollution, installing blackout curtains can help keep out unwanted light from the city.
