It makes up about 25% of the total protein in the body and is found in various tissues, including:

* Skin: Provides strength and elasticity

* Bones: Provides structure and support

* Cartilage: Provides cushioning and flexibility

* Tendons and ligaments: Connects muscles to bones and bones to bones, respectively

* Blood vessels: Provides strength and flexibility

Collagen's role in maintaining the structural integrity of the body makes it incredibly important for overall health.