Effective techniques for building muscle endurance include incorporating high-repetition strength training, circuit training, and using bodyweight exercises. High-repetition strength training with moderate weights promotes muscular endurance by challenging muscles to perform over extended periods. Circuit training involves alternating between different exercises with minimal rest, maximizing effort and efficiency. Additionally, activities like running or cycling at lower intensities can enhance muscular endurance. Incorporating a progressive overload approach and varying routines can further stimulate improvements in muscle endurance over time.