Synchronized movements brought dozens of dancers together Saturday at Cumming First United Methodist Church as they performed two routines being done across the nation. The National Dance Day routines were posted online through the Dizzy Feet Foundation, an organization supporting dance education that was founded in part by Nigel Lythgoe, a judge on the popular TV show “So You Think You Can Dance.” National Dance Day, the last Saturday in July, promotes dancing “as a fun and positive way to maintain good health and combat obesity,” according to the organization.