Which statement best describes body fat mass?

• A. Body fat mass is the amount of fat tissue.
• B. Body fat mass includes muscle.
• C. Body fat mass equals lean mass.
• D. Body fat mass is non-fat tissue.

Answer: (D)

Body fat mass is the amount of fat tissue in the body. It represents adipose tissue only and does not include muscle or other lean tissues. Lean body mass (fat-free mass) includes muscle, bones, organs, and body fluids. Saying fat mass is non-fat tissue would be incorrect because fat mass specifically refers to fat tissue, not the rest of the body's tissues. Understanding this distinction helps when assessing body composition and readiness, since fat mass and lean mass contribute differently to overall weight and health.