Pulled from https://aryion.com/forum/viewtopic.php?f=18&t=41038 by user Lumesa
>A gram of protein is roughly 4 calories, a gram of carbohydrates is the same, and a gram of fat is 9 calories
>Adipose tissue is almost wholly fat and water at 70% and 22%, respectively
>These tissues' cells are only about 8% protein, and they make up an average 12% of the human body
>Gaining a pound of this tissue requires roughly 3500 calories in excess of a 2200 median diet.
>Muscle tissue is mostly protein, around 22%, and the expected constant of 70% water, with a low 8% fat, and is about 38% of the human body
>Calorie-devoid water is 70% of a human body's tissues overall
>Blood and bone are volume-food, being mostly indigestible on the side of bone and mostly water for blood
>That said, blood (due to a high sugar content and about a 7% protein volume) possesses about 450 calories per 500 mL, and the average human body contains about 5.5 liters of blood altogether
>There's also glycogen, a compound stored in relatively small amounts (about 500 grams per human). That's your carbohydrates, and they don't tend to vary much with a person's weight