The squad was split into three groups with fitness and rehabilitation coach Alex Court monitoring results of various running tests.
That included the 'bleep test' where players run back and forth between markers and have to reach a mark on the bleep.
"I suppose it's just what you expect after a few weeks holiday," smiled Michael after completing the bleep test alongside the likes of Stephen Kelly, Ledley King and Calum Davenport.
"We're all straight back into it but all the lads do the work together in groups and that makes you stronger.
"We've all been away, been on holiday, spent time with our families and now it's all about getting back into a routine.
"Pre-season is vitally important and I've missed a couple recently so it's even more the case for me.
"It's great to be back and to see all the lads again."
Michael Dawson said the lads were pleased to be back for pre-season training - even though they had to face the dreaded 'bleep test' on Saturday.