Amber goes to workout one day and is so into her music that shecontinues her workout for 1 hour without taking a break, leading toextreme muscle fatigue and she can not continue. The next day Ambergoes to workout and takes two 15 minute breaks to talk to herfriends which allows her to complete a full 2 hour workout.

1. Why was Amber able to work out for a longer amount oftime when she took the two 15 min breaks?

A. During relaxation ATP build up is able to decrease, delayingmuscle fatigue

B. During relaxation ATP and acetylcholine can increase,delaying muscle fatigue

C. During relaxation build up of ADP can decrease, delayingmuscle fatigue

D. During relaxation build up of Pi and lactic acid candecrease, delaying muscle fatigue

E. More than one answer is correct

2. While Amber is doing her workout she decides to trylifting heavier weights. She usually uses 8lb weights but wants totry 12lb weights. When she tries to lift up the 12lb weight she isunable to, why?

A. The force created was more than the weight that she wastrying to pick up

B. The force created was less than the weight she was trying topick up

C. The force created was the same as the weight she was tryingto pick up

D. No force was created

E. More than one answer is correct

3. The next day Amber got home from work and wasextremely hungry so she ordered 1 large pizza and finished itherself. After eating the pizza she was supposed to walk her dogand go workout but she felt too tired and was extremely lazy so shedid not do anything. Why did this happen?

A. The sympathetic nervous system took over and caused her heartrate to decrease

B. The parasympathetic system took over which caused her heartrate to stay the same

C. The sympathetic nervous system took over which caused herheart rate to increase

D. The parasympathetic nervous system took over which caused herheart rate to increase

E. The parasympathetic nervous system took over and caused herheart rate to decrease