diagram including the fit of Astudillo-Defru et al. (2017) (gray solid lines). We show five M dwarfs whose activity cycles were detected using CASLEO spectra with gray stars (Prox Cen: Cincunegui et al. (2007a); Gl 752A: Buccino et al. (2011); AD Leo: Buccino et al. (2014); AU Mic: Ibañez Bustos et al. (2019a), and Ross 128: Ibañez Bustos et al. (2019b)). The activity cycle of Gl 699 was detected by Toledo-Padrón et al. (2019) employing seven independent sets of spectroscopic observations. We represent Gl 729 with a red star. It is a clear outlier from the saturated regime of this diagram.