protein isnt used as energy but amino acids.
Firstly it takes much longer to get the same enrgy from amino acids. Carbs are ideal and then theres fat that is used aerobically or in time of starvation.
Amino acids arnt stored for energy, they are the building blocks of thousands of important things like heamoglobin, hormones, muscle protein, enzymes etc. So as you can see the body used amino acids as a last resort because of its normal function as other things and the enrgy from it is slow.
Firstly it takes much longer to get the same enrgy from amino acids. Carbs are ideal and then theres fat that is used aerobically or in time of starvation.
Amino acids arnt stored for energy, they are the building blocks of thousands of important things like heamoglobin, hormones, muscle protein, enzymes etc. So as you can see the body used amino acids as a last resort because of its normal function as other things and the enrgy from it is slow.