The problem with this is that anything we don't burn for fuel within 3 hours of eating gets predominantly stored as body fat. (parsleyhealth.com)
It gets burned for fuel by other organs (heart, liver, kidneys etc). (eatstopeat.us)
That is, if you are restricting calories, you require more protein than when you eat adequate calories because the protein gets burned for fuel. (MomsTeam.com)