It's the feeling.
Or lack thereof.
Hollow.
Empty.
A rush of air.

An attempt to fill the lungs so full they burst.
Old wineskins to new wine.

It's the desire.
Or lack thereof.
Lifeless.
Anorexic.
A stifled sob.

The realization: Darling, you're far too young for death to come knocking on your door.