I thought I'd add a bit of an anatomy lesson today. Your deltoid is the muscle that is located directly on top of the shoulder. It is made up of three parts: the anterior deltoid (red)--which is the prime mover for shoulder flexion, (raising straight arms up in front of the body) the medial deltoid (green)--which is the prime mover for shoulder abduction (lifting the arm away from the center of the body--out to the side) and shoulder horizonal abduction (movement away from the center of the body when the arms are in the horizontal plane) and the posterior deltoid (blue)--also responsible for shoulder horizonal abduction. There are many other muscles involved in the shoulder joint, but these are the main muscles most tend to think of when we say "shoulders."
The pecs, lats, rotator cuffs, biceps and triceps are all muscles of the shoulder joint. In future posts, I will go into more details of each of these muscles and their functions as well.
I chose an upper body workout for today that is a continuation of the Summer Shape Up workout I posted earlier in March. In this workout, each exercise is performed for 30 seconds. Although it is an "upper" body workout, there is plenty of movement in the lower body to make it cardio. It is also done continually with no real breaks to keep it cardio as well. If it gets to be too much, pause and take a quick break and come back to it as soon as you can. Only a mat or carpeted area is required for this workout.
He does one stretch at the end for your hamstrings and calves, but doesn't really stretch your arms at all. So, again, I recommend doing the stretch video following this workout.
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