The first-team squad were put through their paces at London Colney on Tuesday morning.
Arsene Wenger's side host Cardiff City on New Year's Day as they look to cement their position at the top of the Premier League.
Our club photographer was at the training session and sent back these exclusive pictures
Copyright 2019 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source.