Brooke Shields, 55, shows off her bathing suit body as she splashes into Monday

Not everyone is a fan of Monday mornings, but Brooke Shields found one way to make it a little fun.

The actress, 55, shared a video of herself jumping off a boat and into the ocean as she kicked off the work week.

‘Monday mood… jumping right into the week,’ she captioned the video.  

The video begins with Brooke springing off the edge of the stylish boat with her arms raised high into the air.

Once mid-air, the actress gazes towards the camera momentarily before splashing into the refreshing water.

All throughout, Brooke looked amazing in a black bathing suit which highlighted her gym-honed physique.

Brooke, who shares daughters Rowan, 17, and Grier, 14, with her screenwriter husband Chris Henchy, 56, has made exercise a routine part of her lifestyle. 

Speaking with InStyle in May, Shields said she feels ‘physically better than ever’ in her early 50s, and encourages her peers to focus on their fitness.   

‘People my age can get crossed off at a certain point – like you’ve had a good run, you’ve had your kids, you’ve had your career, you’re done,’ she said. ‘We can really inspire each other right now to do something within our power to feel better.

She has even invited fans to join her on her Instagram account, where she frequently live streams her workouts.

Brooke says being slim never came naturally to her.

‘I was never skinny. I was never considered the skinny one,’ she told The MOMS last month.

‘I’ve got man hands, and man hands are great. I have a very strong bone structure and I’m a strong person.

The actress added that she was never ‘waif’ thin like the other models in the 80s and the 90s.

‘Strength became my go-to,’ she added.

‘I have to work really hard to be fit … I’m not a naturally ectomorphic person. I have to really work my a** off but I’m stronger and healthier and now I don’t feel like I have to hide as much.’