My gym is a rec gym. We work floor skills. I have some super talented kids and want to get the best out of them and give them the best. When is the best time to condition, at the beginning, during, or at the end of class? Right now running and stretching starts off our classes, with conditioning during the class. They have a certain number of strength and flexibilty drills to complete that day during class. I spot while this is going on-pulling them from their work out. Any suggestions on changes to get the best out of my athletes?