Two evolutionary tracks showing the effects of incorporating core overshooting into a stellar model. Both tracks show M = 1.2 M _⊙, Z = Z _⊙ models evolved using MESA version r12778 from the pre-main sequence to the red giant branch. The track with overshooting parameter α _ov = 0.4, shown in red, shows that incorporating overshoot changes the evolution leading up the subgiant branch.