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.