What benefit is gained from regular exercise?

Engaging in regular exercise offers numerous health benefits, with one of the most significant being the enhancement of the immune system. This boost in immune function plays a crucial role in the body's ability to fend off illnesses and diseases, including chronic conditions such as heart disease, diabetes, and some forms of cancer. Additionally, regular physical activity is associated with overall wellness improvements, such as better mental health, increased energy levels, and improved cardiovascular health.

It's important to note that the other options do not reflect the positive outcomes of regular exercise. Decreased muscle mass would indicate a detrimental effect, while promoting unhealthy eating habits contradicts the health-conscious lifestyle often associated with exercise. Similarly, reduced coordination is not a benefit of exercise; rather, regular training often enhances coordination and balance. Thus, the choice highlighting the boost in the immune system and disease prevention accurately captures a key advantage of maintaining a consistent exercise routine.