Amen.
Tyler the best approach is to look at what the best trainers do.
Razor Ripped is aware of that post and now tempers the use of Metformin BUT as both he and I agree Metformin has a huge benefit in several ways.
When he asked me if I thought it should be abandoned I told him "hell no". Just pay more attention to when and how you use it.
He had great success with his trainees who use Met and he still has great success with his trainees who use Met.And... like everything else more attention needs to be paid to such details IF you are natural. Steroids allow people to not be forced to focus on that much detail...