External rotation on the Cable Machine: This exercise works the deeper muscles in the shoulder joint. They are called the rotator cuff muscles. Front part of your shulder, that is your anterior deltoids, a major part of your uppber chest and your triceps.

For more Upper Body Exercises Click Here

http://www.youtube.com/watch?v=TEmOwwcqrbQ&list=PL07D1ED926558E980

If you like my videos Click Here to SUBSCRIBE to my channel

http://www.youtube.com/subscription_center?add_user=yobohofitness

If you have any queries or questions regarding my routines or anything related to fitness in general please do send a comment.