Just read Roy Keanes book where he took Ipswich to SAS training, said it didn't work at all.
BTW, thought he was a bit of a prick but having read his second book where he is very reflective and self critical, he is less so. Says he made loads of mistakes and played up to the moody git we all know him for. A great read and a cracking quote after one of his strikers was booked for taking his top off.....along the lines of.
For [censored] sake, some lads can take their top off but not you, you little fat C**t , with your body gat percentage you will get my fitness coach sacked,!