Hormones are invisible messengers that change mood and body, so they stand for forces that move you without asking. Dream books read them as change and emotional tides.
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.