In: Chemistry
Pretend you have a very curious 12-year-old sister who is into weight lifting and wants to run a marathon someday. She likes having things explained to her and understanding how things work. However, she hasn't studied chemistry yet. She asks you where the energy comes from to help her lift weights and to run really long distances. Write an explanation for her that is relatively complete, but non-technical. [If you are wondering why this question, nurses, dieticians, etc. often have to explain things to patients in non-technical terms.]