Casein protein is a slow digesting and extremely rich protein source that is a continual muscle feeder long after whey protein has run its course.
For many people, it's almost impossible to consume protein every 3-4 hours, which is what your body needs for optimal muscle growth.
It's no wonder that bodybuilders and athletes alike have gravitated towards using this very beneficial, advanced protein source because of the fact that it is not depleted out of your system in such a short time.
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