Just like mum! Model who made headlines for her amazing six-pack at nine months pregnant gives birth to baby boy who is already 'shocking nurses with his strength'

Fitness guru and model Chontel Duncan (left and right), from Brisbane, Queensland, has given birth to a baby boy, Jeremiah (inset). 

The bronzed HIIT founder made headlines during her pregnancy due to her high intensity workouts, impressive set of abs and tiny baby bump (left). 

Mrs Duncan gave birth to Jeremiah on Friday and said he was 'healthy and happy' and 'extremely alert.' 

She also thanked everyone for their support and shared a number of adoring videos (right) and photos online.