Institute of Human Anatomy on Instagram: "You Produce HOW MUCH Saliva?! 🤯💧 An average adult produces about 1 liter of saliva per day. That's the parotid gland—the largest of three salivary glands—working hard for you! 👅 Let's do the math: 📊 Per year: 365 liters (about 96 gallons) 📊 Over a lifetime: ~28,000 liters (7,400 gallons) That's enough to fill 90 BATHTUBS with spit! 🛁😱 Your body is constantly producing this essential fluid for digest