But it isn’t just students who would benefit from a later start. Kelley says the working day should be more forgiving of our natural rhythms. Describing the average sleep loss per night for different age groups, he says: “Between 14 and 24, it’s more than two hours. For people aged between 24 and about 30 or 35, it’s about an hour and a half. That can continue up until you’re about 55 when it’s in balance again. The 10-year-old and 55-year-old wake and sleep naturally at the same time.”
Who has a greater average sleep loss than a 24 year old person?
A 14-year-old person A 30-year-old person A 30-year-old person who is a student A 70-year-old person