The stars of 'Glee' are now working three or four day weeks.

The show's creator Ryan Murphy has revealed the third series of the musical TV show - starring Lea Michele, Corey Monteith and Matthew Morrison - has been filmed differently to the past two to prevent them being "burnt out".

He said: "We've figured out a way to shoot the show where many of the actors work three to four days a week so they have time off and they're not burnt out.

"You can see and feel it on the set. The actors I feel are renewed and excited and thrilled to be there. It's fun again. It was really hard now."

He also revealed he was not planning to make a spin-off version of the show when some of the lead actors - including Lea Michele - leave at the end of the season.

He said: "I would never do 'Glee: The College Years', but I think there's very organic ways that you can keep the stars on the show and keep them big and keep the audience invested in them."