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Hours
55
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Review

22/03/2012

2.50/5

I have been using Optimum Nutrition Serious Mass for a long time now, after trying quite a few mass gainers before it. The total number of calories is what does it for me, can’t find it anywhere else and the chocolate flavour is pretty damn good. I struggle to eat enough calories in a day for really good muscle growth but i find the job a lot easier with serious mass.

- Jamie