The company has launched the new initiative in an attempt to tackle some of the mental health problems associated with social media as tech behemoths come under increasing pressure to protect young people.

If a teenager is using TikTok later than 10pm, their feed will be interrupted by a meditation exercise that is aimed at promoting better sleep.

Should they choose to ignore the prompt, the app will show a second, full-screen prompt that is harder to dismiss.

It will also be available for adults using the video-sharing platform but will be switched on by default for users under the age of 18.

TikTok claims that 98 per cent of teenagers kept the meditation experience switched on during testing for the feature.

The company has also announced an initiative to give advertising space to mental health charities on the app amid growing calls to prioritise younger users.

In the UK, companies will be fined and even banned from July if they do not take measures to prevent harmful content from appearing on youngsters' social media feeds.

Watchdog Ofcom published the final version of its children's codes, as part of the Online Safety Act, to set out what the sites must to do to protect the welfare of young people.

It says that they are a "reset for children online" and will mean "safer social media feeds", but some campaigners don't think the legislation goes far enough.