Optimum Nutrition Platinum Tri-Celle Casein, Chocolate Decadence, 2.37 Pound Fast-acting whey protein coupled with rapid digesting amino acids will always be lucrative for everyone for pre and post workout formula as it helps refuel and refresh our muscles for a pleasant muscle recovery process. But when bedtime comes, a slow digesting casein protein would be better for you between meals and especially at sleeping time where your body takes hours without any food. Optimum Nutrition’s Platinum Tri-Celle Casein is the best of Optimum Nutrition’s casein lineup. Micellar casein is combined to a structure three times the average size of it with the use ON’s patent pending MicelleXL technology. With its large size, it would take many hours to be absorbed and digested in order to provide a very long release of amino acids which supports lean muscles. Take it with Whey Your whey protein, with it being fast-digesting, will be used before and after workout to provide a fast muscle recovery. When dull, between meals, or asleep, your Optimum Nutrition Platinum Tri-Celle Casein will pick up the slack and provide you slow digesting protein for a steady flow of amino acids. The whey and casein combo will give you an ultimate protein supply.