Muscle endurance refers to the ability of a muscle or group of muscles to sustain repeated contractions over an extended period. It is essential for activities that require prolonged physical effort, such as running, cycling, or swimming. Improving muscle endurance can enhance overall fitness and performance in various sports and daily activities. Training for muscle endurance typically involves performing exercises with lighter weights and higher repetitions. This approach helps increase the muscles' ability to resist fatigue. Common exercises include bodyweight squats, push-ups, and plank holds, which can be incorporated into a regular fitness routine to build endurance effectively.