Answer:
What is it that you ought to keep after you have given it to someone else?
I cannot be felt, seen or touched; Yet I can be found in everybody; My existence is always in debate; Yet there is a style of music named after me.
Cycle Cycle Cycle.
Long and thin, red within, with a nail at the end.
What's that 7 letter word with thousands of letters in it?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?