The "Morbidity and Mortality Weekly Report" ("MMWR") Series is prepared by the Centers for Disease Control and Prevention (CDC). Data presented by the Notifiable Disease Data Team and 122 Cities Mortality Data Team in the weekly "MMWR" are provisional, based on weekly reports to CDC by state health departments. This issue of "Morbidity and Mortality Weekly Report" includes the following reports: (1) Physical Activity Levels of High School Students--United States, 2010 (Janet E. Fulton, Dianna D. Carroll, Deborah A. Galuska, Sarah M. Lee, Danice K. Eaton, Nancy D. Brener, and MinKyoung Song); (2) Beverage Consumption Among High School Students--United States, 2010 (Nancy D. Brener, Caitlin Merlo, Danice Eaton, Laura Kann, Sohyun Park, and Heidi M. Blanck); and (3) Place of Influenza Vaccination Among Adults--United States, 2010-11 Influenza Season (Erin D. Kennedy, Tammy A. Santibanez, Leah N. Bryan, Pascale M. Wortley, Gary L. Euler, James A. Singleton, Carolyn B. Bridges, Cindy W. Weinbaum, Lisa M. Koonin). Also included are: (1) Notes from the Field; (2) Announcement; (3) Errata: Vol. 60, No. 21; and (4) QuickStats. Individual reports contain tables and references.