Why do kindergartens have to wash and eat snacks during classes from 2 to 2: 50?

Kindergarten classes should clean, wash and eat snacks from 2: 00 pm to 2: 05 pm, considering the following reasons: children should sleep and rest after lunch, and getting up and washing at this time is conducive to children's developing good living habits, and eating snacks to supplement nutrition is beneficial to their health!