Kelly Clarkson is only approaching her 30th birthday, but the singer has joked that her hectic schedule leaves her feeling much older.
The Grammy-winning Mr Know It All star, who sang her way to victory on the first ever American Idol almost a decade ago, admitted the strain of promoting her 2004 album Breakway took its toll.
"Because my career went from zero to 100, there was no 'growing'. I learnt well under pressure, but, like, four years passed by and I hit rock bottom," she told Closer magazine.
"It was four years of non-stop. Breakaway just exploded everywhere. Everyone was making a lot of money, so everyone was pushing the train."
The constant work caught up with Kelly when she became ill and was forced to take a six month break.
"I feel like I'm 45," joked the 29-year-old, who releases her latest album Stronger later this month.
"I love working, but at the end of the day you've got to take care of yourself."