Flash mobs are alive and well, and the November Project is proving this by making waves across the country with groups—sometimes in the thousands—causing a scene by breaking a sweat on a public dance floor. Compared to other trendy fitness programs like CrossFit and Soulcyle, this early morning flash-mob-workout is a great deal. Partly because it’s free, but also because of the motivation inspired by peers to meet sometimes before 6am in the middle of cold months to shake it and stay in shape. (Sounds fun to us!) The November Project also confirms the findings of several studies, including one in a 2006 published in Sport & Exercise Psychology Review, which has shown that group exercise is more effective than working out solo. Will you join the flash mob workout cult? You know you want to.