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A Dutch ad agency has come up with a challenge — it wants you to go 99 days without Facebook.

It claims the time away from the social media site will not only save you 28 hours, but it will also make you happier.

This in response to a recent social media experiment conducted by Facebook that involved over 700,000 users.

So far, over 22,000 people have taken the challenge — they need to remove all Facebook and messenger apps from their devices and can’t share any links but one that says they are taking 99 days off the site.

You can read more about the challenge here.