One thing that I have found to work on the little kids (4,5,6 years old) is that I have told them to use there tears as energy in there match. If they are hurt that is one thing but if they are upset and they look over we have a special sign that I give them and it is like a switch that goes off in there heads that there is a huge boost of energy and alot of them have come baack and won a match. There is no yelling just a small hand gesture and there is a animal on the mat. The bad thing is that each one has there own "sign" that I as a coach have to remeber. Just a thought.