A．They don't get rid of flabby arms. 
B．They can damage arm muscles. 
C．They aren't acceptable to most people. 
D．They can raise one's blood pressure. 

A．Exercising the entire body. 
B．Having your blood pressure taken daily. 
C．Losing weight prior to exercising. 
D．Weighing in before each exercise session.

A．Wearing arm weighs while you are swimming. 
B．Jogging vigorously in one place for a long time. 
C．Using bicycles that require you to use both your arms and legs. 
D．Walking slowly while swinging your arms back and forth.