Chapter 7: Adventures in Bodybuilding

Half way done with the book, I have to say this chapter is the most fascinating. I've always wondered how human bodies eventually grew from such a tiny embryo to a size in which it is so visible. I was intrigued by Shubin's observation in cells and how they function to nurture our bodies. While some cells grow to enhance bones and skins, others stop growing which prevents cancers such as those in the skin. Nevertheless, I liked the idea where Shubin compares cells in our bodies to a river for they both remain the same despite changes. Just like glue we use to sticks things to another material, it fundamentally holds our cells together, allowing them to communicate and form a distinct structure. Besides the biological glue, molecules also play a crucial role by helping cells to stick together. In spite of this, I have learned that skeleton has the biggest impact on the structure of our body because without it, we would be formless like slimes. On top of the significant notion that every living organism and composed of cells, they need to cooperate with each other to keep our bodies strong and healthy.