Slow Digesting ↓Whey Protein Hydrolysate - Broken down into faster-absorbing peptides, this rapidly infuses muscle-building amino acids.Whey Protein Isolate - Digests and absorbs rapidly and is, gram for gram, the highest available yield of protein.Whey Protein Concentrate - Closest to whole food and contains real subfractions.Egg Albumin - Highly bioavailable and is high in naturally-occurring BCAAs and arginine.Micellar Casein - Digests slowly, infusing valuable amino acids over several hours.