  Evidence from the analysis of eclipsing binary systems revealed that
late-type stars are larger and cooler than predicted by models, and that this
is probably caused by stellar magnetic activity. In this work, we revisit this
problem taking into account the advancements in the last decade. We provide and
updated a list of 32 eclipsing binary or multiple systems, including at least
one star with a mass $\lesssim 0.7$ M$_{\odot}$ and with mass and radius
measured to an accuracy better than 3%. The~comparison with stellar structure
and evolution theoretical models reveals an overall discrepancy of about 7% and
-4% for the radius and effective temperature, respectively, and that it may be
larger than previously found below the full convection boundary. Furthermore,
the hypothesis of stellar activity is reinforced by the comparison of different
systems with similar components. Further eclipsing binaries with accurately
determined masses and radii, and with estimated activity levels, as well as the
implementation of magnetic activity in theoretical models will help to improve
our knowledge of low-mass stars, which are prime targets for exoplanet surveys.
