Mountain climber: how to do it, muscles worked and variations

Dynamic plank that alternates hip flexion and raises cardiovascular demand.

Image: start and end of the movement.

All 3 variations

Mountain climber bringing each knee toward the opposite elbow, which adds oblique work to the conditioning.

Form. From a high plank, bring one knee diagonally toward the opposite elbow and alternate at a steady rhythm without raising your hips.

Common mistake. Raising the hips, bouncing on your hands, or losing the alignment of your shoulders over your wrists.

Obliques, Rectus abdominis · Bodyweight

Fast alternating hip flexion from a plank, useful for conditioning and core control.

Form. Actively push into the floor, keep your shoulders over your hands and bring each knee in without letting the pelvis rotate excessively.

Common mistake. Bouncing without control, lifting the hips a lot, or loading the wrists with the shoulders behind the hands.

Rectus abdominis · Bodyweight

Mountain climber with your hands on a BOSU, a progression that adds shoulder and trunk stability to the cyclic movement.

Form. Place the BOSU on a non-slip floor, plant your hands firmly and alternate knees without letting the pelvis drop.

Common mistake. Using an unstable base too soon, jumping without control, shrugging your shoulders, or sinking the lower back as you speed up.

Iliopsoas, Rectus abdominis · BOSU balance trainer

The muscles listed are an editorial reference, not a measurement. Adjust the range and the load to what feels comfortable.

In the app every exercise has its full animation: over 600 exercises and over 700 demonstration videos.