Equipment
No Equipment Needed
Muscle Group
Core
Lie on your back on a mat with knees bent and feet flat on the floor. Position your heels close enough that you can comfortably reach toward them without your hips lifting. Keep your arms by your sides and your head/shoulders ready to lift slightly off the mat.
Set your feet about hip-width apart and your knees bent roughly 90 degrees. Brace your core by gently drawing your ribs down toward your pelvis. Keep your low back lightly pressed into the floor (neutral to slightly posterior pelvic tilt). Lift your head and shoulders just off the mat so your abs are engaged, and keep your chin slightly tucked.
Exhale and reach your right hand toward your right heel by crunching and sliding your ribcage toward that side. Keep your hips mostly still and avoid pulling with your neck. Return to center under control, then reach your left hand toward your left heel. Continue alternating side to side in a smooth rhythm, maintaining constant tension through your obliques and upper abs. Aim for controlled, small-range movement—focus on the squeeze, not speed.
Recommended Sets and Repetitions:At BLK BOX GYM, we provide personalized recommendations based on your fitness goals:
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