On Sunday, Casper, the mattress startup that brings the importance of sleep to focus, hosted their first-ever Sleep Symposium at ROOT NYC. The all-day event included a panel of speakers and experiences exploring the science and culture of sleep, featuring Arianna Huffington, Reggie Watts, Neil Harbisson, and more. After a day spent learning about sleep, guests celebrated with a nightcap at the after party and a performance by St. Lucia.