I recent saw reference by a trainer to "getting what you pay for" when it comes to supplements, such as protein. I know that with whey, for instance, some brands have 19g of protein per, say, 25 gram serving, while another will have 22g per 25 gram serving. So, there is obviously some difference in processing, filler, or whatever.
But, what are the real differeneces in protein quality? Why isn't 20g of whey 20g of whey? What more does one get when they pay more?
Does anyone have any handy info/links about this matter?
Thanks.
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