The reason whey is so popular is the speed at which we digest it. Whey is digested quicker than any other protein source. This makes whey great for post workout because the amino acids quickly feed muscle tissue, supporting immediate muscle growth and repair.
Whey is the number one ranking protein source on the BV (biological value) chart, too. BV rates proteins by their efficiency for generating new body tissue, such as muscle tissue. Whey isolate, the most pure form of whey protein powder, scores a massive 149 points. Whole eggs are the food source that scores second to whey at 100 points. As we can see, whey isolates take the lead by a long shot.
Whey Concentrates
Whey protein is one of two proteins found in cow's milk, …show more content…
The rest of the product consists of small amounts of fat, milk sugar (lactose) and often sweeteners and flavorings. While this product is still excellent for building muscle, some may experience bloating and gas because of the lactose.
Whey Isolate
Whey isolates are a more pure extraction of whey proteins. Isolate powders consist of at least 90% pure whey proteins and some are 100% pure. The higher the levels of purity the more you pay. This purity does give the isolates a slight edge for building lean muscle over the concentrates; not to mention that consumers also like the negligible levels of fat and sugar. For those who experience some of the gas and bloating of concentrates, isolate often resolves the issue.
Casein
Casein, the other milk protein, is great for building muscle, too. It is still a high-scorer on the BV chart with 77 points, but the main difference is that it digests more slowly than whey. For this reason, body builders often use casein as a solid meal or as a bedtime snack, rather than post-workout. Casein takes about 5 hours to digest, providing muscles with sustained protein compared to whey. Whey digests in just a couple of hours, making it better for delivering immediate