The zipper test is an assessment of range of motion for the scapular abductors, and lateral rotators.
The part of you body which can get affected by a lumbago is you lower back of your body!
yes a zipper is a lever because the back part of the zipper is the fuclcrum
it effects the whole body
Basically all of it.
arteries
your eyes.
liver
Tabbaco effects the whole body
The brain is the most affected part of the body. It is due to the fact that emotions are created there.
Lungs
skin
skin