Airbnb co-founder and CEO Brian Chesky is defying Silicon Valley’s grindset with a ban on emails and early morning meetings—the 43-year-old billionaire likes to stay up late, and call or text instead.

Airbnb founder Brian Chesky's night owl routine includes an 8 p.m. workout and then working from 10 p.m. until around 2:30 a.m.

Airbnb CEO Brian Chesky is rejecting the traditional Silicon Valley grind-set by ditching email, starting meetings at 10 am, and working until 2:30 am. This unconventional approach is also being adopted by other successful CEOs.