I agree on the lack of recovery time. Respectfully disagreeing with your trainer - There are other master trainers who advise that the more muscle you have, and you exhaust them 100%, you naturally need more time for repair - which is where the growth happens.

Here is an article pointing to the last 10 years of research. It is now common knowledge that more recovery time is not slacking.

http://saveyourself.ca/articles/str...g-frequency.php

You could also do a google search on "strength training plateau" and see if anything resonates for you.

Also have you seen Mark Sisson's guidelines? He has strength training 2-3 times a week and high intensity only once.

If you are even slightly overstripping your recovery it's like blowing up a tire while standing on it.