Lets assume that 42% number is real, which is a big if. If you count sleep as rest then wouldn't you only need to rest a couple hours a day to meet this rule? I

Lets assume that 42% number is real, which is a big if. If you count sleep as rest then wouldn't you only need to rest a couple hours a day to meet this rule? I feel like the article acts like that is some unattainable number. For most people working white collar jobs that doesn't seem crazy.