Lungs take in life with every breath, so tradition reads them as space, freedom and the capacity to take things in. Heavy or tight lungs point to feeling stifled.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.