What is a common error associated with the Romanian deadlift?

Using the arms rather than the trunk to resist the load is indeed a common error in performing the Romanian deadlift. This exercise is designed to focus on engaging the posterior chain muscles, particularly the hamstrings, glutes, and lower back. When individuals rely on their arms to control the weight instead of utilizing their trunk, they can compromise their form, which detracts from the exercise's effectiveness and increases the risk of injury.

In the Romanian deadlift, it is crucial to keep the focus on maintaining a strong, stable trunk while allowing the hips to hinge back, which enables the load to be managed primarily through the legs and hips, rather than the arms. This not only helps in building the targeted muscle groups but also ensures proper body mechanics during the lift. Balancing the load appropriately and using the torso effectively is essential for optimal performance and safety in this exercise.