Step by Step / Updated 03-27-2016
Although many mistake the windmill for a side bend, it isn’t. This movement blends hip flexion and thoracic rotation, which means the hips support the load, not the low back. The windmill is a heavy-hitting rotational core exercise, but you must approach it with caution. Don’t rush weight onto this movement.
First, practice the windmill without weight, and then after you perfect the movement pattern, try the windmill with a kettlebell or dumbbell.