- Reaction score
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I've never looked them up on instagram. Martin Berkhan has a very informative blog which is very influential, GOG has a lot of instructional youtube videos.
You can look up their workout programmes and let me know if they're missing key muscle groups. Berkhan has actually made fun of the concept of "ab day", he says that if you're working out properly you will automatically work out your abs in the other exercises. He has tremendous abs himself as a proof of concept.
Here's Berkhan's article "fuckarounditis", it's widely considered one of the best articles on bodybuilding ever written:
http://www.leangains.com/2011/09/fuckarounditis.html
I'll check it out later. About to be busy for a bit