Self Quantifiers Groups in Boston, MA

Does anyone know any self quantifiers groups/clubs/email lists/meetings/etc in Boston, MA? I’m from the PAAWS study at Northeastern University and we are looking to recruit people for a physical activity study where participants wear accelerometers and a camera for a week to track their movement in an effort to make the next generation of smart watches. Self quantifiers would be perfect participants for this study because we can supply them with csv files of all of their results at the end of the study. Any help as to where to find/contact this audience would be great!