'Sexercise' is Melanie Brown's fitness mantra

London, July 10 (IANS) Singer Melanie Brown says the secret to her fit and healthy body is sex.

"If I'm honest, it's lots of working out, which is a commitment and boring, and then sexercise," femalefirst.co.uk quoted Brown as saying in response to a query about her fit frame.

The 38-year-old, who is married to producer Stephen Belafonte, is currently a judge on reality show "America's Got Talent".

She says she gets plenty of attention from her fellow judge Howard Stern.

"He's constantly hitting on me and I just don't get it. We all actually get along and we do actually like each other," added Brown.

The former Spice Girls singer, who has three daughters - Phoenix Chi, 13, Angel, five, and 21-month-old Madison - also said that she being a mother is a challenge and that she would never let her children become famous until they finish school.

"It's a balancing act every single week. You just make it work. I say to all my kids, 'Get your education first and if you're good enough, I'll tell you and then you can go into the entertainment world'," said Brown.