“airbenders are able to warm themselves with only their breathing”
ok so this explains why katara and sokka were bundled up in parkas galore while aang was just walking around in his little jump suit like it was a perfect summer evening. I’m so glad this was cleared up. I literally thought Aang’s optimistic attitude is what kept him warm, heavens.
So you remember the firebender prison? And how Zuko kept his bending at full strength when he was put in the freezer box, which disabled anybody else put in there? That’s because Iroh taught him that airbender trick, just like later he taught him waterbending moves to deal with lightning. Iroh was secretly master of all four elements and passed it on to Zuko without him noticing.
AVATAR IROH
Weren’t Iroh and Ozai, like, the grandsons of Firelord Sozin? It makes sense that Avatar Roku would have taught his friend useful moves from different bending styles. Maybe those techniques got passed from Sozin down to Iroh (who would have been more open to learning them than Ozai) and then to Zuko.