Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxic > Health-in-Motion Updated 14 April 2016 Exercise your brain As with friendship, neglect and complacency can truly “undo” your brain. Your actual nerves, or grey matter, are mostly determined by your genes at birth. But your white matter – the insulating “telephone wire” that helps transmit information – continues growing until you’re about 45 or 50. What separates people with minds as nimble as kittens from those who process thought like lumbering old Labradors, is the amount of exercise they give their brains. Reading a book every week is the brain’s equivalent of a brisk daily walk 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Medical Dagga use tied to serious diabetes complication Diet and nutrition Cold brew vs iced coffee: What’s the difference? Medical My illness doesn’t define me, says happy diabetic Medical Postpartum depression may raise heart risks Medical This is why it's so hard to quit smoking News Cholera case reported in Limpopo, patient recovering From our sponsors Dementia and Incontinence: what you need to know Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract Live healthier Quit smoking » How to beat triggers that make you crave a cigarette You need to learn how to beat the behavioural, environmental and emotional triggers if you want to succeed in quitting smoking. Hygiene » Your showerhead may be bathing you in germs You probably think showering will wash away dirt and germs, but your showerhead might dump nasty bacteria on you instead that may cause lung infections.