Arsenal's first-team squad have stepped up their pre-season preparations in Germany this week.
The players are at a training camp ahead of this weekend's final summer friendly against Cologne and double sessions are the order of the day ahead of the new Premier League season.
But amid the serious work there have been some light-hearted moments. At the conclusion of Tuesday morning's session, Alex Song challenged Andre Santos to a penalty competition.
Watch our video to find out who won - and what happened next.Copyright 2016 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