New horror movie The Outwaters is so scary it's setting off viewers' Apple Watch heart alerts

Well, if you wanted a hair-raising horror flick; you got it.

The new horror film The Outwater is said to be so chilling that people are actually getting alerts on their Apple Watch of accelerating heart rates.

One viewer said their heart rate had exceeded 120 bpm while watching the horror. Keep in mind that the average heart rate is 60 to 100 beats per minute.

He wrote: "I’d say tonight was pretty damn eventful! @RobbieBanfitch you’re amazing, hilarious, and this rewatch of

@TheOutwaters has solidified my opinion that I believe this to have one of the most horrific and traumatising sequences i’ve ever experienced in a found footage horror film."

Another said: "I'm still processing #TheOutwaters. I am not sure if it worked for me. The sounding made me so uncomfortably dizzy that I had to leave the theatre to vomit. This never happened to me before. It's more disturbing than scary if that makes any sense."

While a third shared: "It was disorienting, disturbing, extremely anxiety-inducing, and an absolute journey into hell."

The film was written, directed, and stars Robbie Banfitch.

It's presented through found footage from memory cards belonging to friends who venture into the Mojave Desert to shoot a music video, where they encounter mysterious and threatening phenomena.

But aside from its shocking, visceral audience reaction, the horror has received positive reviews from critics and even scored 72 per cent on the movie website Rotten Tomatoes.

Bloody Disgusting reviewer Meagan Navarro said the film 'mercilessly lulls viewers with a soothing intro before ripping open a dark abyss beneath them, flinging them into an immersive pit of visceral madness'.

Austen Goslin for Polygon said that while many horrors have entertained 'found footage', The Outwaters breaks convention in 'squirmy ways'.

He added: "When it’s working, The Outwaters feels like the audience has been invited to witness the horrors running through Mike’s head at the end of The Blair Witch Project as he stares into the corner in the basement."

While Collider writer Chase Hutchinson praised the film for providing a refreshing angle to an otherwise 'scrappy sub genre'.

He said: "A stunning embrace of abject horror that peels back the layers of skin just as it does those of the mind, The Outwaters stumbles upon a brutal brilliance in the desolation of the desert."

I think I'm definitely going to have my peppermint tea close by for this one.