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 28 August 2017 Are you a fan of wrist-worn gadgets that help you track your fitness? Are you a fan of wrist-worn gadgets that help you track your fitness? While the performance of these innovative devices is constantly being improved, it should be remembered that some of their measurements are more accurate than others. Researchers at Stanford University in the USA recently put seven different models of fitness trackers through their paces and found that while most of them were able to measure heart rate pretty accurately, none of them were capable of monitoring the number of calories burnt during exercise very well. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Diet and nutrition Is canned or frozen produce bad for me? News Hand hygiene – how clean are your hands really? Parenting Could same-sex couples have babies with shared DNA? Study hints it's possible Medical Add asthma to list of possible causes of childhood obesity Medical Feeling down during spring? Blame your seasonal allergies News UP student wakes up from 11 week coma: ‘We’ve been surprised by how strong she is’ 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 Gut health » Can't lose weight? Blame it on your gut Our nutrition experts weigh in on why gut health is such an important factor in weight loss, on World Obesity Day. Sleep better » Yes, there is such a thing as too much sleep A new study confirms that too little sleep can impair your brain, but interestingly, too much sleep is also a problem.