Inclusion Criteria:  self-report using cannabis at least 3 times per week or more often in the past month active Facebook profile  Exclusion Criteria:  participants who cannot read English will be informally excluded  if participants fail identity verification based on:  Internet Protocol (IP) addresses survey time completion repeat attempts survey responses photo identification from a time stamped self picture sent to the research team cannot safely engage in moderate to vigorous physical activity [assessed at screening] participated in previous Project Verdi waves