New mum? No need to exercise...

An insurance company analysis has found mums of babies typically lift about one tonne a day. Photo / Thinkstock

Stay-at-home mums lift the equivalent of nearly one tonne every day caring for their babies, an insurance company says.

Typically a nine-month-old baby weighing 10kg is picked up and put down about 90 times a day, equating to 900kg, analysis by Million Dollar Woman has found.

"When you factor in up to five feeds a day, two naps, a night time sleep and lifting your child for playtime and around the house, the weight really adds up,'' Million Dollar Woman CEO Lynette Argent said.

"We all know parents with young children are often tired, and we put it down to lack of sleep, but perhaps it is also the solid weights workout they get on a daily basis.

"Who would have thought stay-at-home parents lift the equivalent of one tonne, or a baby elephant, every day or so?''

As a result, full-time workers spend 161 per cent more on health and fitness every year than stay-at-home Australians, Ms Argent said.

"We all know that full-time mums with young children have tremendous demands on their time, which may prevent them going to the gym or working out,'' she said.

"On average, stay-at-home Australians spend $148 a year on health and wellness, compared to $386 for full-time workers.''

- AAP