Brittany Hansen Cassin of John Daugherty Realtors is cofounder of Young at Heart, a young professionals group for the American Heart Association. This year was the first Young at Heart – After party in conjunction with “The Beat Goes On” Heart Ball at the Hilton Americans on Saturday, February 13th. The successful after party was chaired by Brittany and Travis Cassin and Laura and Ryan Zehl, which drew more than 125 people.