Sorry to get technical here but this point needs making I think.
We can store carbohydrates and fats in our bodies from one day (or year) to the next. Protein is different. It cannot be stored, so any we eat over and above our daily requirement is actually a problem for our body. The liver converts the excess amino acids to urea which is excreted by the kidneys. To put it briefly, most of the steak goes down the toilet!