Inside Sydney Sweeney's hardcore health and fitness regime: From reformer pilates to MMA classes and ONLY drinking water, a look at how the actress maintains her jaw-dropping physique

She's the It girl everyone loves, with her incredible career, gorgeous beauty and jaw-dropping physique. 

And Sydney Sweeney often leaves fans pondering about how she maintains her insane figure while juggling 18-hour working days, seven days a week.

From reformer pilates to Mixed martial arts classes and a conscious effort to drink only water, here is a look into Sydney's hardcore health and fitness regime.

The actress and model, 26, follows a very gruelling, yet enjoyable, workout schedule consisting of pilates, cardio, MMA and water sports.

She's recently been obsessing over hardcore Pilates-inspired workout, costing around £40 each class, that's sweeping the nation.

She's the It girl everyone loves, with her incredible career, gorgeous beauty and jaw-dropping physique

And Sydney Sweeney, 26, often leaves fans pondering about how she maintains her insane figure while juggling 18-hour working days, seven days a week

Speaking to WSJ. Magazine recently, she revealed: 'I like this place called SolidCore. It’s a full-body high-intensity workout but on a reformer, and it’s been killing my ass. I love it'.

SolidCore was founded in 2013 in Washington D.C. by Anne Mahlum, former non-profit worker turned entrepreneur. She created it to be 'pilates core workouts redefined'.

As well as the popular workout, Sydney used to compete in MMA competitions but is unable to do the activity as often as she likes in case she gets an injury.

Speaking to Women's Health magazine, Sydney recalled: 'It was a grappling competition against all guys a weight category above me, and I got first place.

'Those guys were probably saying, "Oh, we didn’t want to hurt her", but they were definitely trying. Everyone broke a sweat!'

Sydney also raves about the benefits of water-sports, claiming it always makes her body more 'sculpted' and 'stronger'.

The publication added: 'I grew up on the water, always running around in a bikini. If I wasn’t swimming in the lake or the ocean, I was skiing or attempting to surf. 

'I see such a change in my body after an entire summer. My arms are stronger, more sculpted. My abs are rock solid.'

The actress and model follows a very gruelling, yet enjoyable, workout schedule consisting of pilates, cardio, MMA and water sports

Sydney also raves about the benefits of water-sports, claiming it always makes her body more 'sculpted' and 'stronger'

When it comes to fuelling her body with the right nutrients and goodness, Sydney opts to having just water as her choice of fluid

But asides from the health and wellness side of things, Sydney makes sure to over indulge on the naughties when she wants too

When it comes to fuelling her body with the right nutrients and goodness, Sydney opts to having just water as her choice of fluid.

She told the publication that she decided when she was younger to stick to just drinking water as her beverage choice and it's now become 'her thing'.

But asides from the health and wellness side of things, Sydney makes sure to over indulge on the naughties when she wants too.

The actress prefers to eat sugar in moderation and loves the odd treat, especially her childhood snack, 'Kraft mac and cheese'.