Muni Long has embraced a "much more healthy lifestyle" since undergoing a double lung transplant.

The 37-year-old Grammy-winning singer, who was diagnosed with lupus in 2014, underwent the life-saving surgery after doctors gave her just a week to live - and she's now revealed she's "feeling good" and she's doing everything she can to stay healthy as she recovers.

She told The Hollywood Reporter: "I'm feeling good, as long as I do everything I'm supposed to do. Make sure I take my [face] mask everywhere, take hand sanitizer - it's really how we should all be - but I'll be a lot more cognisant of my surroundings, and what I'm eating, and things like that.

"It's actually a much more healthy lifestyle."

Muni opened up about the moment she was told she'd die without the surgery during a recent appearance on Good Morning America.

She said: "My jaw dropped. Literally. I was like: 'That's rude.' But they were kind of like: 'This is not a joke. You need to make a choice. You can either go to hospice or you can get these lungs.'."

Muni was initially concerned about how her voice might be affected by the op. But after being "faced with [her] own mortality", she thought about her three-year-old son, Tatum - who she has with ex-husband Raysean Hairston - and decided to go under the knife.

She added: "The ego and the vanity was just like, 'But what about my voice? What's going to happen?'.

"But then I look at my son, and I think about how much more life that I have to live. Quality of life was first. I can't sing if I'm not here."

Muni is recovery well after the surgery but doctors told her she will have to wait six months to a year before she can return to the stage to sing again.

However, she's hoping to be given the green light to return to work after an upcoming check-up in August.

She said: "Tomorrow is my last appointment for all the things. No symptoms. Asymptomatic. No infections. None of that. Then I have my vocal check-up, six months will be in August because I had to have vocal surgery, as well."