Body Composition Program Practice Exam 2026 - Free Practice Questions and Study Guide

The correct answer highlights that poor nutrition and lack of sleep are significant lifestyle factors that can negatively affect body composition. Poor nutrition typically leads to an imbalance in energy intake versus energy expenditure, promoting weight gain or loss of lean muscle mass. Diets high in processed foods, sugars, and unhealthy fats can lead to an increase in body fat percentage and might impair metabolic processes.

Moreover, lack of sleep can disrupt hormonal balance, particularly hormones such as ghrelin and leptin that regulate hunger and satiety. When sleep is insufficient, it can lead to increased appetite and cravings for unhealthy foods, further complicating efforts to maintain a healthy body composition. Over time, these factors can contribute to an overall decline in physical health and an increase in body fat.

The other options include lifestyle factors that generally promote a healthy body composition, such as regular exercise, proper nutrition, and consistent meal planning. Sedentary behavior, in isolation, is known to negatively impact body composition, but when combined with good hydration, it does not inherently suggest a negative impact, as hydration is essential for overall health.