Fat person wanting to work out?

I have a friend in early 20s where he is not fit at all... He seems to grow all his fat on his tummy. every food he eats digests slowly. Now, i got him to start working out with me, my question is, should he take in a whey protein after he works out? Since hes already fat will whey protein make him fatter or... show more I have a friend in early 20s where he is not fit at all...

He seems to grow all his fat on his tummy. every food he eats digests slowly. Now, i got him to start working out with me, my question is, should he take in a whey protein after he works out?

Since hes already fat will whey protein make him fatter or better?
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