Comparison of the evolutionary tracks for a 5 M_⊙ star from the Zero-Age Main Sequence to the core He-burning phase. The tracks are computed using GARSTEC with three different convection treatments: MLT only (gray), MLT with ad hoc overshooting (orange), and Kuhfuss 1-equation TCM (cyan). The blue and red lines represent the theoretical blue and red edges of the instability strip, respectively, as estimated by Deka et al. (2024). The black dot represents a model with a central helium abundance of 0.6, whose turbulent kinetic energy profile is shown in Fig. 2.