I don't understand why Duolingo is promoting staying up late to (at best) study, as it is shown to be harmful to the brain and its learning ability. People need their sleep to learn a new language; I think it's quite counter-intuitive for a company trying to get people to learn something to do this. I don't at all think that the overtime achievement is a good idea, although I do like some of the other ones.
Yeah, agree 100%.
Plus the metric is odd, because it equally includes doing units on the weekends, which seems only geared to school kids. I don’t know about others but I work 60-80 hours a week. It’s far, far harder for me to work on units weekdays than it is on the weekend.
Working every day is healthy. Staying up late to work is not.