Casein protein and whey protein are very similar in their nutritional values. Casein and whey may look identical, but the way they work differ greatly. Casein possesses the unique ability of drip feeding the body protein for a sustained period of around 4-7 hours. Meanwhile whey protein is extremely fast absorbing, providing the muscles with an immediate protein hit. Here is a little insight into how their roles differ:
Casein protein is a slow releasing protein that has the ability to clot in the stomach. This allows casein protein to be fed to the muscles at a slow rate. This is why casein is an excellent supplement between meals and before bed. By consuming casein during these times muscles are not being starved and are still receiving quality nutrients. This means that muscles are able to grow and repair at a faster rate than they would do without casein. Casein also boasts not only the ability to promote protein synthesis but also to prevent protein breakdown in the muscles.
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