Which statement best describes the relationship between physical activity and insulin sensitivity?

Regular physical activity enhances insulin sensitivity, making this the best statement to describe the relationship between physical activity and insulin sensitivity. Engaging in consistent exercise helps the body's cells become more responsive to insulin, which is crucial for maintaining normal blood glucose levels. This improved sensitivity means that the body requires less insulin to manage glucose effectively, which is beneficial for preventing conditions like type 2 diabetes.

Additionally, physical activity stimulates glucose uptake by muscles during exercise, contributing to better overall metabolism and allowing the body to utilize insulin more effectively. This can also have long-term effects on metabolic health, improving how the body manages energy sources.

In contrast to the selected answer, higher physical activity does not lower insulin sensitivity, nor is there any reasonable evidence to suggest that physical activity has no impact. The option stating that exercise only aids in weight loss overlooks the broader metabolic benefits it provides, including the enhancement of insulin efficacy.