Top: variation of the angular velocity () as a function of r during the computed evolution of the 1.1 M_⊙ star (Z = Z_⊙). The colour scale used allows the identification of the different fronts of extraction of the angular momentum and their propagation speed. The shaded area indicates the convective envelope, while the dotted white line corresponds to the limit of H-burning (defined as ϵ_nuc ≤ 1 erg s^-1). Bottom: evolution of the loss of angular momentum during the computed evolution of the 1.1 M_⊙ star (Z = Z_⊙).