Gironda Sternum Chins

Grasp the pull up bar with a shoulder width underhand grip.

Hang from the bar with your arms fully extended.

Pulling yourself towards the bar lean your head back as far as you can and arch your spine.

Continuing pulling so that your collarbone passes the bar and you are able to touch your sternum to the bar.

Slowly lower yourself back to starting position.

Repeat this motion.