Home > Newsletters > Need to Know > Set up an air filter at home Updated 18 July 2016 Action point 0 When you get back from a walk or braai, change into a clean set of clothes. Immediately toss the old ones into the laundry basket so that you don’t spread allergens throughout the house. Read more about preventing allergies. More: Need to KnowSet up an air filter at home advertisement Other news Parenting Things you shouldn't say to someone who stutters Sex This is exactly how long the sex ‘afterglow’ lasts, according to science Sex The 10 worst things that could happen to your penis Sex This is how having sex actually makes your brain smarter Fitness Sex, love and bicycles Medical SEE: Hungover? Here are 6 ways to cope From our sponsors R2000 Skin Renewal online store voucher up for grabs! Dementia and Incontinence: what you need to know 8 strategies for treating both your bladder problems and your depression Live healthier Don't even bother » SEE: When you cough, this is what happens to your body LISTEN: Can you spot the smoker’s cough? 7 cough remedies that definitely don’t work A chronic cough can be the bane of your life. Here are seven cough remedies you shouldn't waste your time with. Be in the know! » How to manage sensitive teeth 5 ways runners mess up their teeth Oral health basics: what you need to know Dr Simon Reeves talks us through the importance of oral health basics. Here’s how to care for your teeth properly.