Home > Newsletters > Need to Know > Set up an air filter at home Updated 29 June 2016 Action point 0 Wash your hair before you go to bed. That way you will rinse off all the pollen your hair has collected during the day. Read more about preventing allergies. More: Need to KnowSet up an air filter at home advertisement Other news Lifestyle Should you squat on a public toilet to avoid germs? Fitness 5 new rules of super strength Fitness The 10 best yoga poses for men Medical 7 celebs with rare diseases Lifestyle ‘I slept on a yoga mat for 7 days – here’s what happened to my body’ Sex These 2 factors make the biggest difference in your sexual satisfaction From our sponsors Managing diabetes in the workplace Back-to-school with diabetes Live healthier Effects on your brain? » 5 ways to get more seafood into your diet Mercury in fish may raise ALS risk Is it bad for your brain if you literally never eat fish? Calling all grown-ass picky eaters! Eeewwww! » ‘Why is my cough worse at night?’ SEE: When you cough, this is what happens to your body Can you get sick if someone coughs on you? The fine saliva mist emitted by a cough remains suspended in the air for up to 10 minutes.