Rotation plays an important role in the evolution of stars. For decades rotation-age relationships have been used as surface rotation can be measured rather easily. Here we show the result of the measurement of rotation periods for a large number of Kepler solar-like stars along with their level of magnetic activity. We also study solar-like stars for which oscillations have not been detected using 1 month of Kepler data in order to understand what can be the reason behind these non-detections. Surprisingly the conclusion of our analysis is that magnetic activity is not the main reason for not detecting acoustic modes in those stars.