  The Sun has been known to rotate for more than 4 centuries, and evidence is
also available through direct measurements, that almost all stars rotate. In
this lecture, I will propose a review of the different physical processes
associated to rotation that are expected to impact the evolution of stars. I
will describe in detail the way these physical processes are introduced in 1D
stellar evolution codes and how their introduction in the modelling has
impacted our understanding of the internal structure, nucleosynthesis and
global evolution of stars.
