Good Morning Britain health expert Dr Hilary Jones has issued a frank warning regarding coronavirus as gyms in Britain prepare to open their doors.The GP revealed on the ITV breakfast show on Thursday that new reports suggest that coronavirus can exist in the air for some time after the person with the virus has left.Dr Hilary's warning follows the news that Prime Minister Boris Johnson could be set to give the go ahead for gyms to open their doors next week.Health officials are reportedly satisfied that indoor gymnasiums are safe to reopen as long as they stick to strict rules put in place to stop the spread of the virus.Explaining the latest World Heath Organisation findings to Ben Shepherd and Ranvir Singh this morning, Dr Hilary said:.