Answer:
I contain five little items of an everyday sort. You can find all five in a tennis court.
I help engines spin and pants stay up
I'm a ruler with 12 agents. Half of them work in the darkness. Who am I?
I am very easy to get into,but it is hard to get out of me. What am I?
I am the reaction after enjoying soda.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?