Bonnie Crater, CEO of marketing company Full Circle Insights and a Silicon Valley veteran, says, “My whole life I’ve probably worked typically 40-50 hours a week.” There have been busy times, but even when she was 26 and working at Oracle, she would visit a nearby ice rink in the middle of the mornings on Tuesdays and Thursdays to get a speed skating workout in. “I just did it,” she says.

The key reason? “I was a much better performer if I had good balance in my life,” she says. Indeed, people who work reasonable hours in unreasonable fields say that while having time for personal priorities is great, the business benefits are often just as critical. “Our philosophy is that the rest is as important as the work,” says Crater, who claims to chase people out of the office around 5 p.m. “We work in an industry where business creativity is at a premium,” and “in order to be the most creative, your brain has to be not tired.” She asks people about their hobbies in job interviews—to ensure they have them. “We like to encourage a maximum of 50 hours,” she says. “It’s working for us.”

Source: You Can Be Successful Working Fewer than 50 Hours a Week – Fortune