Kalvin Phillips has revealed Marcelo Bielsa's relentless nature at Leeds United extends towards the club's injured players.
Bielsa's training sessions are notoriously tough as he works the Whites as much as possible in order to build their fitness for his intense style of football.
Speaking on BBC Radio Five Live, Phillips explained the manager will always demand 100 per cent from his squad in these sessions, particularly with his infamous Murderball routines.
The midfielder also revealed that Bielsa will not let players who have niggles but still started the session pull out halfway through.
"It's relentless, just constant," Phillips said.
"He wants you to be 100 per cent every time. Whenever you go out onto the training pitch, he wants you to give 100 per cent.
"If you're feeling a little niggle or don't think you can train one morning, he'll just come to you and say, if you're training, you're doing the full session, you're not coming out halfway through.
"Or doing the Murderball sessions we do, I could run into someone and clatter them, and he won't even give a foul.
"If I clatter someone, we don't stop, we don't play offsides or anything.
"The first couple of weeks we did it, we were looking round wondering what it was we just did and surely we couldn't do it for the whole season.
"It's one of those sessions we most enjoy as we get the most out of it.
"He works us to the bone every single time - it's one of those sessions you dread but after you do it, you feel good."
The Whites are now in the midst of a busy Christmas period - and Phillips does not anticipate anything changing in training despite a hectic run of games.
He said: "It's going to be exactly the same, I don't think it changes.
"The last few years, over Christmas time, we've had a few slip-ups as well, where we've been doing well in the league and then not won in three or four games.
"I think the manager has known that and realises that, so when we're feeling tired he wants us to work harder. You can see that in the games we play, when teams get tired you can see us running about like we've just started the game.
"Training-wise, we kind of hope it settles down but we know it won't."
