Chelsea manager Frank Lampard believes it is unrealistic to "push and push" players to maintain their fitness levels during the coronavirus pandemic with no concrete timetable as to when football will return.
Football in England has been suspended until at least April 30, but that date is expected to be pushed back at a meeting of Premier League clubs next week.
The Blues squad are continuing to train at home in line with government guidelines on social distancing.
"It is very difficult at the moment because we have got nothing concrete in front of us," Lampard said in a FaceTime interview with Chelsea's official club app.
"We have seen that things can change very quickly, so we can only go by the dates we have been given. At the moment it looks like May 1 or the end of April.
"But daily or probably weekly we are looking at it, saying: 'well, how do we train? What does it look like?'
"The last thing I want to do at this moment when the players are in this position when we don't know when the games are going to be is to try and push and push and push for no reason."