They are linked to breath; they are linked to the atmosphere and they are linked to vibrations as well. That is why we say this food has positive prana, this food has negative prana, and this food has neutral prana.
Prana is energy.
Unfortunately, there is no translation for the word ‘prana’ in English.
Prana is linked to energy and linked to the space you are in. It is also linked to food, to the breath, to vibrations and energy in the body. So prana is not just breath.