Body shape (masculine), how long will it take?

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I just wonder if a guy who wants to have a body with big muscles and 6-pack abs, how long will it take to form it? My friend invites me to join a gym everyday and for my work, I think I need fast results because I'm always busy. Is 2 months enough for a well-shaped body even without that very big muscle? Just a simple ab formation, even not 6-pack and a compact breast is enough.