Step by Step Guide
Begin standing with the feet hip distance apart and hold a kettlebell in one hand at the shoulder with a supinated grip (palm facing you). The kettlebell will rest on the outer wrist.
Press that arm directly overhead as you straighten that elbow and pronate the arm (so the palm faces away from you now). Keep the abs engaged to maintain a neutral spine.
Then, lower that arm down to the start position.
Repeat for the desired repetitions.
One common mistake is losing abdominal control which is exhibited by the lower back extended (arching). This is a way of compensating. To avoid this, engage the abs by pulling the belly button to your spine. This will maintain a neutral spine position so the focus can be on strengthening just the shoulders and arms.