Chris Basham has admitted Sheffield United were hurt after missing out on qualifying for European football.
A poor run after the restart saw the Blades squander their chance of finishing in the European places.
"It was three (fitness) sessions a day, and then there was the shock of spending all that time with your family and then leaving them (when the games resumed in mid-June), it was a shock to the system," Basham told the Yorkshire Post.
"It was the whole thing of being at home, being a Premier League footballer and not being able to do anything about it.
"We were lucky that we're a close-knit group. We had a group chat and we were all in there because some people some days were down, some days were up and it was a bit weird.
"We were lucky the technology allowed us to do that and lucky the club gave us some fitness apparatus as well because all the gyms were shut down.
"It was a question of how we were going to keep fit and it was really tough for my body because I needed to stay as fit as I could because I knew I was going to come back to play as an overlapping centre-half. I'm not a lover of training by myself either."