Evolutionary tracks of a 5 M_⊙ Cepheïd for varying metallicity, dissipation length parameter, α_Λ, and nonlocal parameter, α_ω. The variations of the metallicity and α_Λ are shown in the top left and right panel, respectively. In the lower left panel, α_ω is varied in the whole evolution of the star, while in the lower right panel, α_ω is only varied in the post-main sequence evolution. Parameters other than the ones indicated are kept at their default values.