english: I had them keep track of their time for a week so I could add up how much they worked and slept, and I interviewed them about their strategies, for my book.
non_english: Zadala sam im da beleže svoje vreme tokom nedelju dana tako da mogu da saberem koliko su radile i spavale, i intervjuisala sam ih za svoju knjigu u vezi sa njihovim strategijama.