@Stahesh @mrhorsetwat
Mr Horse Twat mentioned using Amino acids for fuel
Protein is made up of amino acids
When the body uses amino acids for fuel by converting them to carbohydrate on a no carbohydrate diet then it is not using those amino acids to build muscle protein
The body does not to any practical degree convert carbohydrate to protein
nor convert fat to carbohydrate or protein
the body can convert carbohydrate to fat
the body can convert protein or amino acids to carbohydrate