Sheffield United midfielder Sander Berge admits training on his own has been tough.
The January signing is frustrated with the season now suspended.
"Training has been pretty tough," he admitted, "but I need it to be able to handle the pace and intensity of the Premier League because I have seen that I have a lot to learn there.
"As a footballer everyone sees what you do on the pitch, but it's about putting hours in all the time, when no-one looks at you. That's where you progress the most.
"I have to make the best of the situation and, as a new player in the Premier League trying to adapt, this is an opportunity to be in better physical shape than when I came over."