Mule,
I got the third edition when it first came out. And i have to say i was pretty impressed with it. Stuff seemed to be pretty acurate. I even asked around with some friends who were into training and nutrition at the time and they seemed to agree with what it had to say.
I got a copy of the 4th edition at the Arnold Classic last weekend at the EAS booth. I so busy that i have only had a chance to skim through it. The only thing different about it that i can see, is that Bill Phillips did not write it. I am sure there are a few more differences, but like i said, i have not had much time.
I like to take everything i read/hear with a grain of salt, but most of the stuff that comes out of EAS/ Muscle Media seems to have scientific references for almost every article. For me, it makes things sit a little easier.
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Thanks,
HickeyNC