What aspect of flexibility training allows the body through a full range of motion?

In flexibility training, the aspect that allows the body to achieve a full range of motion primarily involves stretching and holding positions that extend beyond normal limits. This kind of stretching, often referred to as static stretching or dynamic stretching, helps to lengthen the muscles and tendons, thereby increasing flexibility. By pushing the muscles to stretch further than they might naturally go, and holding these stretches for a period of time, the body's connective tissues gain greater elasticity. This enhanced elasticity contributes to improved mobility and joint function, which is crucial for overall movement efficiency and injury prevention.

In contrast, other options focus on different forms of training. Daily aerobic conditioning primarily improves cardiovascular fitness rather than flexibility. Weight lifting and resistance training are geared toward building muscle strength and endurance but often do not enhance flexibility unless specific exercises are incorporated. High-intensity interval training emphasizes short bursts of intense effort followed by recovery periods, which also do not specifically target flexibility improvement. Therefore, stretching and holding positions effectively address the need for a full range of motion in the context of flexibility training.