Some studies indicate that due to its unique properties, casein can facilitate up to a 7 hour response to protein absorption. Relative to nitrogen delivery and a longer lasting anabolic recovery phase than whey protein, this means that Micellar casein is "in it for the long haul." This serves to support whole body protein anabolism while inhibiting whole body protein breakdown. Even better, a serving of casein prior to bed time could be advantageous to increasing muscle mass. Pro-Elite Pure Micellar Casein is powered with added Zinc and Vitamin B6, two nutrients that may enhance the body's recovery and growth potential. Zinc may support the anabolic hormones testosterone and IGF-1 while Vitamin B6 helps to "unlock" nutrients from foods and supports healthy serotonin levels, the neurotransmitter that controls mood and sleep patterns. These features further promote the incredible PM power of Pro- Elite Pure Micellar Casein.