Arianne Cohen Bloomberg

When employees can slash their traditional five-day workweek to four days, they tend to allocate their new free time to one surprising activity: sleep.

It's a common refrain: Employees are a company's most valuable asset. More specifically, it's their cortexes, the part of the brain that handles language, thinking, reflection, and planning, says neuroscientist and psychiatrist Bruce Perry, founder

When employees can slash their traditional five-day workweek to four days, they tend to allocate their new free time to one surprising activity: sleep.

It's a common refrain: Employees are a company's most valuable asset. More specifically, it's their cortexes, the part of the brain that handles language, thinking, reflection, and planning, says neuroscientist and psychiatrist Bruce Perry, founder