Casein, a dairy protein, is considered a slow protein (or slow digesting protein). It accounts for almost 80% of all proteins found in cow’s milk. It has a very rich pool of amino acids.
When you consume casein, you will reach a peak in blood amino acids and protein synthesis between 3 to 4 hours. It takes time to work its way into the cells, blood, and muscles.
Because of their unique time-releasing qualities, caseins are considered anti-catabolic or muscle-protecting proteins.