Which of the following improved by proper muscular fittness?

Proper muscular fitness improve posture

Explanation:

Good posture and body balance is highly essential for good health of the body. This helps to avoid risks of mechanical injuries. A proper muscular fitness regime has huge benefits like providing good energy levels, efficiently working heart, improves endurance, builds confidence and improves body balance and maintains posture.  

To maintain a good posture, muscular fitness, flexibility, strength, strong skeletal structure, and normal joint movements are necessary. Posture defines the way one should stand, sit, or lie.  

Strength training exercises provides good muscular fitness and aids in good body mechanics. This helps to maintain good body balance and coordination as well as posture.