The trend started in the US when bloggers such as Autumn Whitefield-Madrano, a 36-year-old freelance writer based in Queens, New York, launched a blog on mirror fasting, the Guardian reported.
"I'd become aware that I had a 'mirror face'. Whenever I saw my reflection I'd open my eyes a little wider, suck in my cheeks a little and tip my chin down in an effort to make myself look more like I wanted to. It made me feel really vain," she was quoted as saying by the paper.
She embarked on her first month-long mirror fast in May 2011, in an effort to become less self-conscious about her face.
"I didn't want to do it because I felt bad about myself per se