What is the best (most logical or physically practical) way, if it is even possible, to use elemental magic for the purpose of healing ? What element or elements would be manipulated in healing.
This elemental magic uses four basic 'elements'; water, air, fire, and earth and some magic users are able to use a combination of the above. A very basic knowledge of biology and physics is used by some magic users to assist/enhance their ability with the elements they can manipulate.
EDIT: To clarify what I mean by the elements; fire is fire and can be used for heating/burning etc. Water includes mixtures that are mostly water. Air is the same as what we breathe on earth (yes, mostly nitrogen, but the knowledge of a periodic table is close to non-existent). Earth includes dirt, stones, some metals (depending on the abilities of the mage), and most similar earthy stuff.
I am especially interested in combinations of two, or three (maybe even all four) of the elements (though being able to use all four is extremely rare).