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1. Those occupations which
employees need to stand, for example :
teacher, nurse, steward, shop
assistant, electronic industry of Hi-Tech,
soldier, street peddler....many
kinds of industries which employees
need to stand during a long
period to work.
2. Those occupations which employees need
to sit during a long period
to work, for example: bank,
securities, office personnel, computer
worker, pilot, driver, Accountant,
passenger of long-range flight.
3. Women's period who has the
lack of the blood, those who need better
blood circulation
during doing exercise.
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