Your chest or your pectorals are made up of
two parts, the upper portion and the lower portion. The upper part is attached
to the collarbone. Along the mid-body line, it, attaches to the breast- bone and
the cartilage of several ribs. The pectorals spread out like a fan and
cover the rib cage..
Attached to the rib cage in the center and across to the
shoulder, this muscle lets you perform such motions as pitching a ball
underhanded, doing a wide- arm Bench Press, twisting a cap off a bottle,
swimming the crawl stroke, and doing parallel bar Dips.
In addition, because of
its attachment to the upper arm
(humerus), it plays a large role in movements
like Chinning. There is, a very important interdependence between chest and back
muscles. The chest will cannot reach its full size unless your muscles of the
upper back are fully developed. There are two categories of chest exercises that you will find in this section, one
involves pushing movements such as the bench press and the second category
involves pulling or flying motions such as dumbbell fly's.
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