Which exercises should be avoided by individuals with neck issues?

The Crab and Rollover with Legs Spread are exercises that require significant coordination and tension in the neck and upper spine. The Crab involves supporting the body weight on the back of the head and neck, which can exacerbate any existing neck issues due to the pressure placed on the cervical spine. Additionally, the Rollover exercise demands controlled spinal articulation where the neck is flexed, which can also lead to discomfort or injury, especially if there is an underlying condition.

In contrast, the other exercises listed, while they may still require caution, generally allow for modification that could reduce stress on the neck. For example, the Teaser and Bicycle can often be performed with careful attention to head positioning, and the Seal and Plank can be executed in a way that minimizes neck strain. Therefore, the Crab and Rollover with Legs Spread are more specifically contraindicated for those with neck issues due to their inherent demands on neck stability and mobility.