The Rotational Lunge is a great move to challenge your rotational core stability and strengthen your legs. From standing, step back with one foot into a low lunge, knee hovering above the ground. Rotate your upper body towards your front leg with control, bringing the weight down to meet the hip. Reset to standing, making sure to keep your hips aligned forward, alternating sides smoothly with each repetition. Take your time in coordinating the rotation to your lead leg, and establish balance as a priority over quantity and speed.