In English, people who go to bed early and get up early sometimes quote the rhyme (attributed to Benjamin Franklin) 'Early to bed and early to rise makes a man healthy, wealthy and wise'. Those who go to bed late don't quote that saying, for obvious reasons. In some languages they talk about 'A-people' and 'B-people' (A being those who go to bed/get up early). Do you have a common saying in Serbian about this, or a commonly used name for the people who go to bed early/late? I'm sure you have a saying for 'The early bird catches the worm', but that isn't specifically about getting up - it could be about e.g. being at the front of the queue at the supermarket to get the best bargains. Хвала унапред!