The 31-year-old singer, who made it to the finals of dance reality show 'Strictly Come Dancing' in 2012, said she had to strictly adhere to a diet plan which she hated, reported Contactmusic.
"When it's incorporated into your daily workout schedule, then you don't really have to think about it. So as soon as I'd stopped completely - the show, the tour - then I had to up the training at the gym," Walsh said.
"I'm over the diet thing though. I think it's worth working out so you can have a have a life and eat. It's a bit antisocial when you're on a diet and calorie counting is boring so I don't really do it anymore," she added.
"It's a great way of keeping fit, it's just the hills you have to be careful of. I think it's a nice thing to do with the family, take the kids and do it. As a kid I feel like I spent so much time on a bike and I don't think kids do anymore, which is a shame," Walsh said.