Natural units constitute a system of physical units derived from fundamental physical constants, such as the speed of light or the gravitational constant. In this framework, the value of one or more constants is set to unity, allowing dimensional analysis to be simplified and expressed purely in terms of the remaining dimensions (e.g., length, time, mass). This method provides a powerful simplification tool in theoretical physics and cosmology, as it naturally eliminates factors that might complicate dimensional equations. The use of natural units often allows for a more compact and symmetry-respecting formulation of physical theories, facilitating deeper theoretical analysis of interactions and fundamental forces.