Can you live without one or the other?

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Yes you can combine, but you may want to know the difference.

Casein protein is more slowly digested than Whey. This is why it is usually recommended before bed. Whey protein digests a little more quickly and is usually recommended before

Why do some have Amino Acids?
What are the difference between Essential Amino Acids, Conditionally Essential Amino Acids & Nonessential Amino Acids?
The lower the Amino Acids, the better?
Thanks.

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Amino Acids are essentially the building blocks of life. Your DNA is made up of amino acids. All proteins and enzymes are made up of amino acids as well. You can ingest proteins (in all forms) to get extra amino acids for your body to break down and

Just for clarification, what does it mean when, on the gold standard whey protein container, it says that it ihas more whey protein isolates. What does this mean? And is the protein in whey protein better for you (does it absorb better) than normal protein?

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What is "normal" protein? Whey protein is found in milk, which also contains casein. Whey is known for its very fast absorption properties which is why it's popular. However, to retain this property, you MUST only take it with water - don't