Chelsea boss Graham Potter took his Chelsea stars to an army base near the town of Liss in Hampshire last Tuesday as part of a bonding day to encourage more togetherness in the dressing room, according to The Sun.
Potter also wanted to use the experience to help the flood of new signings settle in quickly at the club.
The Blues have signed six players during the January transfer window and are close to completing the signing of a seventh player after reaching an agreement to sign Lyon right-back Malo Gusto.
Potter used the trip to the military base to train the minds of his players with a series of mental exercises to get them thinking and working together.
With Chelsea already knocked out of this season’s FA Cup the team has a blank fixture weekend so Potter is using the time to work on mental matters as well as full physical training.
He has another couple of ideas planned for next week but they remain a closely guarded secret.