What is the primary action performed during mountain climbers?

The primary action performed during mountain climbers involves bringing the knees toward the chest while maintaining a plank position, which means the lower body remains grounded except for the feet that are actively moving. This dynamic exercise engages multiple muscle groups, primarily targeting the core, shoulders, and legs, while also promoting cardiovascular endurance.

When executing the movement correctly, one foot remains on the ground while the other is pulled toward the chest in a rapid, rhythmic fashion, mimicking the action of climbing. The goal is to effectively engage the core and stabilize the body as the knees alternate movement and the upper body supports the plank position.

The option that indicates simultaneously lifting both feet off the ground does not accurately describe mountain climbers, as it diverges from the technique that engages the core while also providing stability through the hands and lower body. Mountain climbers emphasize knee drive and core engagement rather than the simultaneous lifting of both feet.