Jack Colback has enjoyed working with SteveBruce again after first playing under him at Sunderland.
Offering some insight into life under the former Man United captain, Colback said: "Steve Bruce has had us working very hard.
"I knew that from his time at Sunderland.
"That is the type of guy he is.
"He wants the team to be fit and fitness levels have been increased since he came in.
"The lads are buying into it and we will see where it takes us."