See Avatar: The Last Airbender. There are recorded accounts of many highly spiritual masters of the East who could manipulate matter and energy in many different ways.
Simple short answer not possible you can only have 1 element per character that's why its good to unlock the main characters.
Their fingernails could be weak.
Alone, no. there has to be some supernatural force behind these actions, whether satanic, Godly or Chuck Norris.
The main factor is how far you could bend before, typically within 10-20 degress of that.
No, only the avatar can bend all four elements, that is what makes him "The Avatar".
Elements in Group I and II can easily bend, but cannot breakdown easily. So as Mg is in Group II, it can bend easily but does not break easily.
Bend has alot more people
Meditation and practice go to WWW.earthflame2.web.com
Yes U have to hold down the spacebar for 5 seconds! good luck :)
You can't in real life because it blocks your bending and in real life people cant bend elements.
You could have a pulled muscle in your knee if there is pain when you bend it.
sorry to burst your bubble but......you just arent