Contrary to the developmental milestones that you learned from those “filmstrips” in fifth grade, adolescence doesn’t begin when your child starts demanding that they be referred to as a tween. It also doesn’t begin when they shave off their brand new body hair. It begins when they cease to awaken before the rooster on Saturday mornings. When your stinky, hairy tween starts sleeping late on school holidays, they are truly an adolescent.