Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Anti-bullying initiatives to protect overweight teens against emotional abuse > Health-in-Motion 25 April 2017 Devices like the GPS built into your smartphone or car have revolutionised the way we travel Devices like the GPS built into your smartphone or car have revolutionised the way we travel. Researchers have discovered that these gadgets do such a good job, parts of our brains switch off when we use them. When they asked volunteers to manually navigate through a simulation of central London, brain scans regularly registered spikes of activity in the hippocampus and prefrontal cortex, regions of the brain involved in memory, navigation, planning and decision-making. When simply following GPS instructions, there was no such additional activity. 0 More: Daily Dose: Anti-bullying initiatives to protect overweight teens against emotional abuseHealth-in-Motion advertisement Other news Medical Depression often a precursor to falls in elderly people News From poo to dagga: 5 health stories you should read today Medical 8 myths about an overactive bladder busted Medical Compound in dagga eases severe form of epilepsy News How to avoid falling asleep behind the wheel Medical Diesel pollution may damage the heart From our sponsors WIN a R2000 Skin Renewal voucher! Constipation in women SA's old diesel vehicles continue to fuel allergies Live healthier Dangerous winter sun » Why female students ignore the risks of indoor tanning Can rooibos protect you from the effects of UVB exposure? Skin cancer always a risk – even in winter During winter, the risk of skin cancer doesn’t disappear. CyberDoc talks to us about when to see your doctor about a strange-looking mole or spot. Did you know? » The 5 saltiest foods may surprise you Craving salt? Your genes may be the reason 10 fascinating facts about salt The one thing that fast foods, whether it be chips, hamburgers, pretzels or fried chicken have in common, is loads of salt.