We tracked how much 3 young startup founders actually sleep

Lance Yan, Kavitta Ghai, and Boris Skurikhin shared four days of sleep schedules with Business Insider.

Lance Yan; Kavitta Ghai; Boris Skurikhin As Silicon Valley embraces hardcore work schedules , founders debate the best sleeping habits.

Business Insider tracked the sleep schedules of three young founders for four days.

One founder got admittedly bad sleep.

Another had a clear regimen to get her seven hours.

The young class of AI founders has gone hardcore, with sober lifestyles and 996 schedules .

Sleep, however, remains an open question.

There are two competing sleep cultures in Silicon Valley.

The biohackers say that rest helps optimize performance.

The hustlers say that founders should work through the night.

To sleep or not to sleep, that is the question.

Business Insider asked three young founders to share their sleep habits .

And to be scientific about it, we didn't just take their word for it.

We spent four days tracking their shut-eye, requesting early morning texts detailing their prior night.