Students gathered on Cross Campus on April 2 to de-stress, release endorphins, and learn about healthy lifestyles from Cassey Ho, CEO of Blogilates, who was recently named one of the top 5 most influential figures in health and fitness by Greatist magazine. Ho led a fitness class, gave a keynote speech, and met with a number of brightly clad participants at the event, which was part of the Happiness Challenge led by healthyU, a student organization dedicated to promoting health and wellness across campus. The Happiness Challenge has engaged nearly 700 students at Yale this semester.