In the following scenario, what is one thing about child development that the activity director may not have taken into account?

In the following scenario, what is one thing about child development that the activity director may not have taken into account?

A recreational program serves children in grades one through five. An activity director is trying to build children's strength. He decides that all children will work on handstands and pushups. (There is a cushioned mat, and the director will spot the children so they do not hurt themselves.)
First graders may get turned off by exercise if it is not presented as a game.
First and second graders may not support their own weight well enough to do a handstand.
Most children cannot do pushups or handstands before second grade.
Younger children and older children are equally capable of supporting their own weight.