We believe very strongly that children should contribute to the family household. We realized very early that children are extremely capable of learning to perform household tasks.
Our rule is if they can walk, they can help with chores.
I don’t know about your kids but mine tend to suddenly be tired, hungry, thirsty, dramatic, and unable to function as soon as they know it is chore time.
It’s the most profound natural phenomenon that I know of. Maybe we should call it Chore Lag?