Image Credit: Shutterstock/Yuganov Konstantin. As children grow, their needs and routines evolve, leading many parents to question the necessity of a set bedtime after their kids reach the age of 10.

than adults—their bodies and brains are still growing, after all. That's why so many parents aim to enforce strict bedtime rules, and a 7 p.m. lights-out is often considered the gold standard. But who ...