I got this from another body builder website. Is it complete bogus? I am still confused as to what sort of protein: soy, whey, casine, etc I should be taking in my daily protein mix. Thanks,
"The quality of a protein is determined by how well your body can use it, a factor termed "biological value", or BV for short. Basically, it refers to how well and how fast your body actually gets and uses the protein. So a whey protein like whey isolate (BV 159) is the most readily absorbed, while a milk protein like casein (BV 77) is absorbed less readily and is said to be of less quality. Now, sometimes it's good to eat lower BV rated proteins because you want to absorb it slowly, like before you go to bed. But generally, you want protein with a higher BV rating."