<span>Ab Roller Evolution is made of metal. It supports neck, head and upper body during workout. It is an upper body trainer: works chest and core. You can do push ups, sit ups, dips. By providing improved support, it reduces stress and strain on body.</span>
<span />Description above is from Amazon.
It is a good idea but has some problems with its design. There is no way to secure it on the floor during exercise. So it moves around when pushed against and would not provide support. A normal crunch will likely work out better.
Answer:
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Explanation:
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<span><span>- advanced degree
</span>Sports physicians have to perform
complex diagnoses of injuries and problems. They also may be required to
perform surgery during the course of treatment. These responsibilities
require extensive knowledge and practice.</span>
They are often targets because they don't fight back, they often provoke their aggressor.