Urg. Still sick. I went to class, and practiced sidekick 'til my hips burned, then did some two-on-one sparring, against a blue belt and a white belt. Two-on-one is where people get hurt, and it's usually not the one. He's bouncing around, madly trying to keep one person behind the other, while deflecting the nearer attacker's blows. This movement doesn't leave much room for error, and if he gets too excited, it's easy for him to move too fast too hard, and really smack somebody. We survived with minor injuries.