In some municipalities they are debating, in others they are already experimenting. Students from 7th, 8th and 9th grade should start school later (at 09.00) to fit with their biological internal clock. Why? Young people’s brains change so much during puberty that they are not built to go to bed early and to wake up early. Melatonin, the substance that makes us sleepy, is released in the bloodstream of young people only after 23:00.
