Science makes the body’s processes seem so cognitive that it’s easy to believe the cliché that it’s all in your mind, when actually it’s in your muscles. Most of the body’s workload is carried out by muscles of three types: Cardiac muscles, skeletal muscles, and smooth muscles. When I was sipping on the milkshake, I realized that the contraction of the muscles in my cheeks and throat was an example of what every muscle achieves when it contracts: during contraction, the shrinking of space propels fluid through it, just like the heart pumps blood. Everyone knows this right? But it’s not about knowing; it’s about the knowing being so thoroughly ingrained, you've quit thinking about the parts long ago. If someone asked how blood flows through the heart? The common answer would be that the heart pumps it. But what if they inquire about the step by step processes by which pumping generates the force to move blood? You know, but you'd probably stumble and backtrack while explaining it. The heart’s contraction expels blood forward by way of the compression resulting from contraction, but when the contraction relaxes, the decompression of the heart muscle creates a vacuum which suctions blood into it. While sucking a thick milkshake through a straw, my whole perception of the human body changed. I stopped seeing the body like a computer. I began to see the body as one large network of triggering, contracting, suctioning and propelling machinery. We can even play with some of those switches: like I could gulp a lot of air and the pressure would trigger a burp reflex, or refuse to blink and the dry environment on the eyeballs would trigger tears.