Plank across the dome and walk your hands side to side.
Keep your hips level as you travel, do not let them sway with each hand.
Walking your hands from the dome to the floor and back turns a static plank into a moving one, and every hand transfer leaves your core briefly supported on three points across surfaces of different heights. Your midsection has to absorb each height change without the hips swaying or dipping. It earns a place as dynamic plank training, building the kind of core control that holds up when your support is constantly changing.
Every hand step changes your base of support, and the height difference between dome and floor tilts your body each time. Your core has to re-stabilise over and over instead of settling into one hold.
Yes, that sway is the exercise failing. Shorten your hand steps, slow down and shift your weight before each hand moves, the goal is a torso that looks frozen while the hands walk.
Just off the dome and across, then back, is a full trip. Distance matters less than clean transitions, so count trips rather than metres.
