Riddle:what do you think I am?

[RachelLovesYou]

I have no legs have I to dance,
I have no lungs have I to breathe,
I have no life and I have to live or die
And yet I do all three.
It's hard. Hint it's a noun/person,place or thing.

 

[sierra_shadow]

Fire!!!!!!!

 

[Zarin]

hmm.....that's hard....idk....what is it?

 

[Whitey]

I'm saying fire, cos flames 'dance' as they flicker, it needs oxygen, and it isn't alive, but it's either burning or not.

 

[Mor]

a zombie / my brother?

 

[beenthere1]

Someone's imagination. (I know mine has to do all three, or I wouldn't/couldn't exist.)