Lead
There are now days with a nap and days without one. You put the child down and for thirty minutes they stare at the ceiling and get back up. Or the child naps reliably at the child care center but resists at home.
"When does napping stop being necessary?" is one of those questions where parenting books and search results give a range of inconsistent numbers. Some children stop at three. Others continue until five. Even siblings in the same household often follow different timelines — that, too, is common.
This article traces the rough age distribution of nap cessation and the physiological processes underneath it — particularly circadian melatonin timing and memory consolidation in the hippocampus — by following the peer-reviewed literature. The evidence suggests that the better yardstick for this decision is not average age but nighttime sleep duration and daytime mood.