The ASCII Normal Heart Rate meme is a minimalist text-based template that mimics an electrocardiogram (ECG) monitor. It typically contrasts a steady, 'normal' heartbeat with a chaotic, rapid pulse triggered by a specific event, person, or realization. Emerging from internet forums and Twitter as a simple way to express excitement, anxiety, or obsession, the meme relies on the visual contrast of ASCII art characters to deliver its punchline. Its versatility makes it a favorite for everything from gaming 'clutch' moments to romantic interests or niche fandom updates, effectively visualizing the physical sensation of a 'heart skip' in a digital format.