Page 49 - The Skinny On Your Diet Plan

What is Protein

Reminder, there are 4 calories in every gram of protein.

Proteins are crucial physiological molecules. They’re the most abundant

macromolecule (“large molecule”) in biology, and they’re involved in
nearly every process that happens in our bodies.

Such as:

• cellular metabolism;

• sending messages within and between cells; and

• creating structures (such as tissues).

There are thousands of different types of proteins in every single cell,

with thousands of functions. Unlike fats and carbohydrates, we don’t use

proteins much for fuel; rather, our bodies tend to save them for other jobs,
such as tissue rebuilding. This makes proteins vastly more complex and

variable than the other two macronutrients, carbohydrates and fats. Our
bodies are always building up and breaking down proteins. This process is

known as protein turnover. Because proteins have many important jobs (as
you can see in the list below), and because they’re always being

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