A person is studying the relationship between exercise and
blood pressure. Two groups are studied. The groups of
participants all stay for a week and as many variables are kept
consistent between the groups as possible except the amount
of exercise (diet, sleep, etc.). Group 'A' is asked to stay inside
and minimize physical activity during the study. Group 'B' is
asked to walk or run a minimum of 5 miles each day and
perform a minimum of 2 hours of additional aerobic exercise
each day. Their results are compared each day to see how
they change.
