explain why exercise is an important component of good physical fitness.

Answer:

Exercise is crucial for good physical fitness as it strengthens muscles and bones, improves cardiovascular health by enhancing heart - lung function, aids in weight management by burning calories, boosts flexibility and balance reducing the risk of falls, and also has positive impacts on mental health which in turn supports overall physical well - being.

Brief Explanations:

Addresses muscle, heart, weight, balance and mental aspects.