Metrex Protein Shake
Hi guys,
One of the most common protein shakes in the UK is 'Metrex' or 'Metrx'.
I've been taking this for a while, I've seen progress in my muscle mass and was wondering, is their a majour difference in terms of ones mass, whether you take it or not?
Does anyone use/tried this brand before?
Are your 'protein shakes' partially responsible for your muscle gain or is it simply from attending the gym regulary and protein from foods?
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