Isaac has been physically inactive and obese for as long as he can remember. He is now determined to lose excess weight with a reduced-calorie diet. Isaac is likely to have difficulty losing weight while dieting because

It takes fewer calories to maintain fat tissue than muscle tissue

Explanation:

Obesity deals with an individual having a dangerously high level of fat in the body. This increases the risk of a heart attack due to the fat clogging the arteries and hindering normal blood flow.

Excess calories from food store in the body as fats under tissues called adipose tissues.

Isaac’s weight loss by dieting may be difficult because it takes fewer calories to maintain fat tissue than muscle tissue.

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