Sept. 5 (UPI) -- Official NFL Twitter accounts were busy Tuesday, posting GIFs to pump up fans for the 2017 season.
The teams that participated included: the Atlanta Falcons, Arizona Cardinals, Houston Texans, Baltimore Ravens, Washington Redskins, Indianapolis Colts, Kansas City Chiefs, Denver Broncos, Philadelphia Eagles, Los Angeles Chargers, Cleveland Browns, Green Bay Packers, San Francisco 49ers, Carolina Panthers and New England Patriots.