Median as a function of stellar mass, with the vertical errorbar representing the dispersion of the individual measurements (upper panel). as a function of stellar mass (lower panel). Black dots represent targets with at least six measurements with S/N_{VR, pix}> 5, while gray dots represent the rest of the stars. Activity decreases with stellar mass down to approximately the mass for full convection (0.35 M_⊙, marked by the vertical dashed line). Interestingly, M dwarfs departing further from the lower envelope (dashed curve) are those which present higher variability.