Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: Are you happy in your job? > Health-in-Motion 15 September 2016 How many words do you know? How many words do you know? It’s really quite difficult to estimate the size of the vocabulary of adults with any accuracy, but recently a team of European researchers has been using a simple test shared on social media platforms like Twitter and Facebook to unlock this mystery. Their results indicate that the average twenty-year-old native English speaking American knows some 42,000 different words. By learning approximately one new word every two days they are believed to add 6000 more words to their vocabulary by the time they turn 60. 0 More in Newsletters Everyone needs a good eight hours of sleep per night, right? More: Daily Dose: Are you happy in your job?Health-in-Motion advertisement Other news News SURVEY: Are you happy in your job? Medical Statins aren't the only way to lower cholesterol Medical 'Spare tyre' worse for your heart than 'love handles' Medical SEE: 6 questions about rabies answered Medical Foetal alcohol syndrome is preventable, but not reversible Medical 'Listen to your gut' to help prevent colon cancer From our sponsors How to still have a good life with diabetes Eye-Q: R50 off! Lose weight Otrivin Menthol relieves sinus congestion Live healthier Love coffee? Your heart may too » What to eat for white teeth Bad foods for teeth-whitening Do any of these drinks cause your teeth to hurt? Savour your coffee – with a bright smile Here's how to stop coffee from staining your teeth while enjoying all its health benefits. Get your groove back! » Get your move on! Morning run? 5 exercises to start your summer fitness regime 6 easy ways to make your workout fun again Some inspiration to make sure your workout routine don't become tedious.