Naomi Watts proved age is just a number as she showed off her impressive physique at the gym on Wednesday.
The 55-year-old Australian actress was spotted in two photos shared to Instagram Stories by her personal trainer Keith Anthony at a gym in Los Angeles.
Going makeup-free in a grey tank top and blue leggings, Naomi looked fighting fit as she flexed her eye-popping biceps while clutching two 10kg dumbbells.
The King Kong star beamed at the camera as she posed alongside Keith, who wore a black singlet and held a set of 17.5kg dumbbells.
'Gym buds 4eva', Keith captioned one image of the pair posing for a selfie.
Naomi Watts, 55, (left) proved age is just a number as she showed off her impressive physique while lifting weights with her trainer Keith Anthony (right) at the gym in LA on Wednesday
In the second image, Naomi and Keith were seen playfully competing in a weight holding competition.
'Gym "feud" - who can hold the weight up for longer? She won.' Keith captioned the picture.
Naomi previously gave fans a glimpse into her surprisingly simple health and beauty regimen, revealing to Who What Wear in 2020 that she makes sure to drink at least two litres of water a day and gets eight hours of sleep a night.
In one image, Naomi and Keith were seen playfully competing in a weight holding competition
'I can tell right away if I've had a good night's sleep and if I drank the right amount of water the day before,' Naomi told the publication.
'If I don't do well on both of those things, it absolutely manifests in my skin.'
Naomi said she is religious about getting facials every few months, taking her makeup off and wearing sunscreen every day.
Naomi previously gave fans a glimpse into her surprisingly simple health and beauty regimen, revealing to Who What Wear in 2020 that she makes sure to drink at least two litres of water a day and gets eight hours of sleep a night
While Naomi admitted she sometimes wishes she didn't have 'lines around my mouth or chin', she has realised that with a few wrinkles comes a much 'sturdier mind' - and a woman who knows what suits her skin and her face.
'I just think you have to embrace the aging process. There are going to be good days, and there are going to be bad days,' she said.
Naomi also revealed she doesn't spend hours and hours doing her skincare and makeup each day even if she's going out - and instead prefers prefers a simple 'five-minute face' approach.
When it comes to her well-being secrets, Naomi said she is a fan of 'movement classes' which engage both the body, mind and spirit.
Naomi always wears sunscreen every day and tries to get a facial every few months
READ MORE: Naomi Watts and her youngest child Kai, 15, look the spitting image of one another as they step out in glamorous gowns during Dior fashion show
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