"Adrenaline" by James Blunt is a song that describes the intense rush of emotions and sensations experienced in a passionate and exciting romantic relationship. The lyrics talk about feeling unprepared and captivated by someone, comparing the feeling to taking a first breath. The song highlights the overwhelming impact this person has on the narrator, hitting them harder than any goodbye or heartbreak. The chorus emphasizes the powerful effect of this love, comparing it to adrenaline. The lyrics use metaphors such as a shot to the heart and a flashbang in the dark to portray the electrifying and intense nature of the relationship. The narrator believes that being in the arms of their loved one makes them feel invincible, like they're bulletproof. The bridge of the song reveals the deep longing and willingness to go to extremes to be with this person. The narrator expresses a desire to overdose on this love, not caring about the potential consequences. This showcases the intoxicating effect this relationship has on them and their willingness to be consumed by it. Overall, "Adrenaline" is a song about being completely enthralled by the intensity and passion of a relationship, experiencing a rush of emotions and sensations that make the narrator feel alive and invincible.