What is protein powder and how is it typically sourced?
Protein powder is a concentrated source of protein derived from various sources such as whey, casein, pea, soy, or egg whites. It typically contains about 70–90% protein by weight, with minimal fat and carbohydrates.
✦
This is one answer. The complete system — the psychology, the biology, and the method — is in the book.
Read The Willpower Lie →Found an error? Let me know →