The body ensures that its energy requirements are fulfilled before using protein to build and repair tissue. So when the body lacks the energy calories it needs from carbohydrates and fats, it uses protein instead.This means that when a person's overall caloric intake is low, the protein requirements increase to ensure that enough is available for tissue maintenance.
Regardless of activity level or muscle mass, everyone has a daily dietary need for protein. For each pound of body weight, a person generally needs to consume. 36 grams of protein each day. Therefore, a 160 pound person needs to consume about 58 grams of protein each day .To get this answer, simply work the equation. 36 x 160 =57.6.