No prizes for guessing what Manchester United's players will be working on in training for the next 10 days.
The Red Devils do not play again in the Premier League until January 15, when they travel to Aston Villa and in that time they can expect to be chasing around Carrington pressing anything that moves.
United's interim manager, Ralf Rangnick, made his name by developing and refining the tactic, which has since been turned into an art form by Europe's most successful managers, Jurgen Klopp being the principal exponent.