Which physical outcome could result from lack of exercise?

The choice highlighting muscle atrophy and reduced fitness accurately reflects the physical consequences of a lack of exercise. When individuals do not engage in regular physical activity, their muscles do not receive the necessary stimulation to maintain strength and size, leading to a decrease in muscle mass, known as atrophy. Additionally, overall fitness levels decline as cardiovascular health, muscular endurance, and flexibility diminish due to inactivity. This reduction in physical capabilities can lead to a cycle of decreased motivation to exercise, further exacerbating the condition.

In contrast, increased stamina and energy, decreased fatigue, and improved metabolic functions are outcomes associated with regular physical activity. Lack of exercise tends to lead to the opposite effects—individuals may feel fatigued, have lower energy levels, and experience metabolic disruptions. Understanding these physiological changes helps to highlight the importance of maintaining an active lifestyle for overall health and well-being.