Leicester City manager Brendan Rodgers says he "had no strength" after contracting the coronavirus in March.
Rodgers is the second Premier League manager to confirm he has had Covid-19, with Arsenal boss Mikel Arteta also testing positive in March.
The 47-year-old says he suffered with "breathlessness" before fully recovering from the virus.
"I could hardly walk and it reminded me of walking up Mount Kilimanjaro," he told BBC Radio Leicester.
"We had a week off when we were supposed to play Watford [14 March] and then the week after that, I started to struggle.