Casein Protein

Casein makes up about 80% of the protein in cow's milk and is characterized by its slow digestion rate. This slow absorption leads to a gradual release of amino acids into the bloodstream, which can help reduce muscle breakdown and promote recovery during prolonged periods without food, such as overnight. Because of its sustained release, casein is often consumed before bedtime to support muscle repair during sleep. It forms a gel-like substance in the stomach, slowing gastric emptying and providing a steady supply of nutrients. Casein contains all essential amino acids and has a high biological value. Studies suggest that casein supplementation can improve muscle protein balance and support recovery, especially when combined with resistance training.

Casein forms a gel in the stomach, which slows digestion and leads to a steady, prolonged release of amino acids into the bloodstream. This sustained delivery helps maintain a positive muscle protein balance over several hours, reducing muscle breakdown and supporting recovery, especially during fasting periods like sleep.