Three Plank Variations That Work Your Core Harder Than a Standard Hold

For those who find the standard plank too easy, three dynamic variations offer a greater challenge in minimal time. The mountain climber — performed in a high plank with alternating knee drives — targets the core, shoulders, arms and legs. Plank hip dips, done on the forearms with side-to-side hip drops, heavily engage the obliques and demand full-body control.