To say that Facebook has a lot of information about its users is a bit of an understatement. The social giant knows about countless birthdays, relationships, jobs and vacations. And now, it’s added your workout habits to the list. Facebook just acquired a Finnish startup called ProtoGeo Oy for an undisclosed sum. The Helsinki-based company is two years old and is the creator a popular a fitness app called Moves. The app launched last year has been downloaded 4 million times.