Dumbbell Shrugs with Internal and External Shoulder Rotation

A standing shoulder shrug set with dumbbells starting with elbows

straight and humerus internally rotated. Gradually change rotation of

the humerus to externally rotated position with each rep. Each rep is

fixed at a progressive degree of external rotation

You can do many reps and return to an internal rotation position and go

external and internal several times. Good slow twitch/burn relaxation