Which of the following stretching programs conforms to ACSM recommendations?
a. 2 days per week, 10 seconds per stretch, 2 repetitions of each stretch
b. 2 days per week, 60 seconds per stretch, 3 repetitions of each stretch
Correct Response c. 3 days per week, 20 seconds per stretch, 4 repetitions of each stretch
d. 5 days per week, 30 seconds per stretch, 1 repetition of each stretch

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?