Exactly^^
Overtraining is not somthing you can simply 'do' to yourself in one gym session...
True overtraining is CNS overtraining.... This is a cumlative effect which occurs over an extended period of time...
Constsntly train too intense, for too long, with too many sets, will not enough sleep, and not enough food and you will become overtrained....
You could go into the gym and do 50 sets for chest.... Would you be overtrained if you then followed your normal routine in the week... NO!
If you whent into the gym and did 50 sets for chest and then when in the next day and did 50 sets for legs and then when in and did 50 sets for back then eventually you will become overtrained....
If you want good advise on how to periodize your training routine to effectivly periodize your routine to prevent overtraining I could talk or day.... Or I could link you to Ronnie Rowland's 'Slingshot Training' thread...
http://forums.steroid.com/showthread...t-to-read-this!