Which of the following choices best describes the relationship between intensity and time in a successful exercise program?
a.
as intensity increases, time should increase
b.
as intensity decreases, time should decrease
c.
as intensity increases, time should decrease
d.
intensity and time should never change

An is a record that contains a list of qualified workers in an industry.

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Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.