What two or more body systems are used in these activities and how are they involved? a. playing a video game. b. getting energy to sit through class by eating cereal and a banana. c. going through puberty. d. touching a hot pan and yanking your hand away. e. jumping up and down. f. drinking water on a hot day. g. sneezing. h. blushing. i. hitting your head on the top of the car as you get into it. j. breathing harder during a jog.