
If you're fascinated by the incredible systems that keep the human (or animal) body functioning, you’ll love this collection of physiology t-shirts. Whether you’re deep into studying muscle contraction, neural signaling, or cardiovascular dynamics, these designs celebrate the science of how living organisms function from the inside out.
Perfect for students, educators, researchers, and health science enthusiasts, these shirts feature everything from funny takes on feedback loops to artful representations of organs, systems, and cells. Show off your love for the inner workings of life—whether you're focused on human biology, exercise science, or animal physiology. From respiration to reproduction, these tees make great gifts for future doctors, PTs, biologists, or anyone who knows there's beauty in how the body keeps itself going. Wear your science with pride and let your outfit speak to your passion for physiology.