No pain no gain
When Derek Sivers sent an email out to CD Baby’s 2 million customers a misunderstanding cost a week’s worth of labour to explain the mistake.
Berating kids that can’t jump over hurdles is one way to ensure they pay attention.
If you want to stop doing something increase the pain that you feel.
Increasing participation and physical activity levels might not be a simple problem. But making activities a satisfying experience is a good start.