Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Are you drinking your sugar intake? > 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: Are you drinking your sugar intake?Health-in-Motion advertisement Other news Fitness 4 reasons your muscles are cramping up 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 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.