Building chest muscles through resistance training not only helps you achieve a chiseled chest but also aids in performing everyday activities that become more challenging with age. According to Dr. Michael J. Joyner, a physiologist at Mayo Clinic, muscle strength is crucial for daily tasks like carrying groceries or cutting the grass, especially as you age. Strength training improves your metabolism by helping your body remove sugar from your blood, thus protecting against diabetes. More muscle mass makes it easier for glucose to enter your skeletal muscles, and active muscles burn more glucose, making your body more sensitive to insulin. This is particularly important when trying to lose weight, as lifting weights helps preserve muscle mass that would otherwise be lost along with fat. Chest muscles, being relatively large, contain many muscle fibers that can be developed, contributing significantly to overall muscle mass and metabolic health.