Your client's right elbow flares during the concentric phase of a biceps curl. What is an effective cue to help correct this issue?

Using the cue to "smash his shirt" with the right elbow during the curl is effective because it encourages the client to maintain proper elbow positioning by engaging them in an imagery-based tactic. This cue allows the client to focus on maintaining the elbow in a more controlled and stable position, which helps to prevent it from flaring outward during the movement.

Imagery and specific cues can improve proprioception, which is the body's ability to perceive its own position in space. By imagining they are trying to press the elbow inward against their shirt, clients can better understand the mechanics of the biceps curl and the importance of keeping the elbow close to the body for optimal muscle recruitment.

In contrast, simply telling the client to keep the elbow still may not provide enough context about how to achieve that stability. Encouraging faster lifting does not address the underlying issue of elbow position and could lead to improper form or increased risk of injury. Focusing on the feet does not directly address the movement at the elbow and is unlikely to have a meaningful impact on correcting the issue at hand.