Michelle Bridges takes son Axel for a 'beach baby workout'

Michelle Bridges has a new personal trainer...and it's not The Commando.

The new mum knows first hand that having a baby can dramatically impact your available gym time, but the ever-inventive Biggest Loser trainer figured out a fun way around it.

The 45-year-old employed her six-month-old Axel to help her train, posting a cute "beach baby workout" video in which she squats and lunges with her son strapped closely to her chest. Well...That's one way to do it.

The video was taken while on a family holiday in Queensland, where they've been celebrating partner Steve "The Commando" Willis' 40th birthday.