Gap Year v. PG year

What do you think is better?

PG because with a gap year (at least for me and my friends) its very easy to forget a lot and then not really have the will to try hard and regain all that information when you get back, basically making ourselves do worse in school. Also if I took a gap year it’ll make me not want to go to school the next year. Gap semesters I get, because sometimes you do need the space to depress and figure everything out but gap years are a lot.