What Are the Signs or Symptoms of a Hard Training?

The more often you do it too hard, the the earlier you have to stop. And i think am the harder you or not, the harder you do things. The problem is that they think, ok, one year back, i did a full plange for ten seconds,. Wee were just really crazy. And em, they haven't done it for one year, every thing m e got worse in there, in the body. Then they tried to start on that level again, and they hurt themselves much more. It's a vicious circle. I think it's very hard to to overcome. Because, you know, i could, could, could do this wen yo'r back