How do you tell if someone is overtrained?

[Cresta]

So do you think he over-trained and that's why he lost? Or did he lose because Pacman was simply faster and better of a boxer? I had read that for weigh in, he was 15 lbs less than he was at the fight. I heard he dehydrated himself prior to weighing in and then drank lots of water and gained back 15 lbs. Is that even safe? That seems like a lot of weight from basically water but I guess our bodies are made of of primarily water. -Jennifer Crestal, Medical Insurance Advisor