Muscle strengthening refers to exercises that improve the strength and endurance of muscles. This can be achieved through various activities, such as lifting weights, using resistance bands, or performing bodyweight exercises like push-ups and squats. Regular muscle strengthening helps enhance overall physical performance and supports daily activities. Incorporating muscle strengthening into a fitness routine can lead to numerous health benefits, including increased metabolism, improved bone density, and better joint stability. It is recommended to engage in muscle-strengthening activities at least two days a week, targeting all major muscle groups for balanced development and injury prevention.