You probably know the story of “training” fleas. Summarily, fleas are put in a box with a lid and they start jumping and hitting the lid. After a short debate, they decided not to jump so high anymore.
Several days ago a friend of mine opened a soccer school for kids. He went to a few schools from the neighborhood and directly advertised his business. Being the first day he asked me to watch the training and give him some feedback. The training went fine, but I've noticed that my friend the coach was a little anxious.