Answer:
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
I come with a train and go with a train and the train doesn't need me but can't go without me.
What word in the English language does the following: The first two letters signify a male the first three letters signify a female the first four letters signify a great while the entire world signifies a great woman?
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
I am quick when I'm thin. I am slow when I'm fat. Wind is my worst nightmare. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?