In the two weeks leading up to the start of classes for kids, experts suggest setting earlier bedtimes and wake-up times. However, for those who start school next week, it’s still not too late.

Henry Ford Family Medicine Dr. Blake Arthurs says there are other things you can do to get your child’s body prepared, like watching their caffeine intake throughout the day.

“That’s a big part of optimizing sleep as well, and not just those classic things like pop, soda, coffee, tea, things like that, but a few surprising things can have caffeine in them, like chocolate has a caffeine content, energy drinks, sports drinks, even protein bars or a granola bar can have caffeine supplement as well,” Arthurs said. “So keep an eye out for those things.”

Younger students need more sleep than older students. Kids aged six to twelve years need nine to twelve hours of sleep.