When performing the modified hurdler's stretch, which body part is kept straight?

In the modified hurdler's stretch, the primary focus is to improve flexibility in the hamstrings and lower back. In this stretch, one leg is extended straight while the other leg is bent with the foot positioned toward the inner thigh of the straight leg. Keeping the straight leg, in this case, the right leg, extended is crucial as it helps to target the stretching of the hamstring on that side effectively.

Maintaining the straightness of the leg allows for a proper stretch along the length of the muscle, helping to prevent injury and improve range of motion. This position also facilitates a better alignment of the spine, as a straight leg minimizes the tendency to lean or round the back excessively. Thus, having the right leg kept straight during this stretch is essential for achieving the desired flexibility benefits.