Collagen makes up more than 30% of the body's total protein, making it the most abundant protein in the human body. The fibrous molecule is the main component of connective tissue and plays an important role in the structure, strength, and elasticity of various tissues. These include skin, bones, tendons, blood vessels and cartilage. As the body's structural framework, collagen is crucial, especially when it comes to supporting and connecting everything. While bones require the highest degree of strength and stability, blood vessels and ligaments must be elastic and, above all, able to withstand tensile loads. For the fascinating molecule collagen, this is not a contradiction. It consists mainly of the amino acids glycine, proline and hydroxyproline, which, depending on the configuration, form a stable and at the same time flexible structure. With collagen, our body makes the impossible possible.