There’s something called the Omni Calculator, which can let you know exactly how many books you could read or how fit you could become … in the time you spend on social media. You just put in the number of times you go on social media during the day, and the average time of each visit. The calculator then tells you how long you're spending on social media, and then translates those hours to all of the other things you could have done instead – like how many calories you could have burned, or how many books you could have read, or how could have learned a new hobby or skill. (Bustle)