Crossfit Trainer Practice Test Level 1 - The Complete 2026 All-in-One Guide to Passing Your Certification

At the top of a pull-up, it is essential that the chin rises above the bar, as this signifies that the full range of motion has been achieved. Therefore, having the chin below the bar does not represent a completed pull-up. The fundamental goal of the pull-up is to demonstrate upper body strength by lifting the body to a position where the chin is clearly above the bar. This not only ensures that the exercise is performed correctly but also activates the appropriate muscle groups fully.

In contrast, while the other options may not signify completion, they do not directly violate the requirements of the pull-up as strongly as having the chin above the bar does. For instance, having the knees touching the ground should not occur during a pull-up, but this typically implies that the exercise hasn’t been initiated or that there are modifications involved. Eyes looking down can be a natural position for some athletes, but it doesn’t affect the execution of the pull-up directly. Similarly, the chest pressing forward may occur as an individual gains momentum or stability but isn't specifically incompatible with executing the movement correctly either. Thus, ensuring the chin is above the bar is the primary indicator of proper pull-up execution.