Side plank with your right forearm resting on the top of the Swedish box, legs straight. Raise and lower the top leg.
Attention:
Head, torso, hips and knees practically form a line (pelvis does not tilt backwards or forwards). Keep the shoulder above the elbow, do not fully lower the training leg.
Lighten:
Support in place (without raising and lowering the pelvis); more box elements (more upright position); spread the upper leg less.
Harden:
Less box elements (more lying position); additional weight (on the hip, on the upper leg for additional training of the leg muscles).
