Facebook co-founder Mark Zuckerburg shared a photo on Saturday of an invention he created specifically to help his wife get a better night’s sleep.
As People reports, the 34-year-old and his wife Priscilla Chan, who is a pediatrician and philanthropist, share two children. Their daughters are Maxima “Max,” 3, and August, 1.
The engineer shared a picture of the “sleep box” on Facebook after noticing how it improved Chan’s quality of sleep, since becoming a mom.
Being a mom is hard, and since we've had kids Priscilla has had a hard time sleeping through the night. She'll wake up…
In part, he wrote:
Being a mom is hard, and since we’ve had kids Priscilla has had a hard time sleeping through the night. She’ll wake up and check the time on her phone to see if the kids might wake up soon, but then knowing the time stresses her out and she can’t fall back asleep. So I worked on building her what I call the “sleep box”.
Zuckerberg went on to describe how the invention works but doesn’t stress his wife out as much as a clock does.
It sits on her nightstand, and between the hours of 6-7am it emits a very faint light — visible enough that if she sees it she’ll know it’s an okay time for one of us to get the kids, but faint enough that the light won’t wake her up if she’s still sleeping. And since it doesn’t show the time, if she wakes up in the middle of the night, she knows to just go back to sleep without having to worry about what time it is.
So far this has worked better than I expected and she can now sleep through the night.
Zuckerburg concluded the post by saying this invention was his way of showing his wife he appreciates her. He also offered the idea to other engineers.
As an engineer, building a device to help my partner sleep better is one of the best ways I can think of to express my love and gratitude. A bunch of my friends have told me they’d want something like this, so I’m putting this out there in case another entrepreneur wants to run with this and build sleep boxes for more people!
The post has gained the attention of many, receiving over 166,000 reactions and over 9,000 shares on Facebook.
Editor’s Note: This article has been updated to reflect an accurate account of how the “sleep box” works.