Money & Business
10 billion dollar companies that didn't exist 10 years ago
...health-concious market. One of the market leaders is Fitbit with its range of activity trackers. The Fitbit tracker, the company’s most popular product, is a bracelet that counts your steps, works out what calories you have burned, monitors your sleep and connects wirelessly with your computer and mobile. You can even 'taunt' your friends by connecting your Fitbit to...