Before beginning a vigorous aerobic exercise routine, all adults should
a. successfully lose five pounds.
b. undergo a thorough physical examination.
c. hire a personal trainer.
d. change their daily eating habits.

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.

Asoccer mom is driving her 75 year old grandmother and her 9 year old daughter home after the game. the grandmother and daughter were both in the back seat and both were wearing their seat belts. a car ran a red light in front of them, causing them to t-bone that car on the passenger side. fortunately there were no serious injuries, but the grandmother did sustain several rib fractures. the mother, daughter and driver of the at-fault car were shaken up but unhurt. what are some possible reasons that the grandmother sustained rib fractures while the other victims did not?

per vehicle mile, motorcyclists are times more likely to die in a crash than passenger car occupants.