Short on time during working hours? One way to address that is to take strategically timed breaks, writes Tony Schwartz, CEO of The Energy Project and author of "Be Excellent at Anything." Research shows that breaks such as daytime workouts, short afternoon naps and more frequent vacations boost productivity and job performance. This seems counterintuitive in most workplaces, he admits. "In most workplaces, rewards still accrue to those who push the hardest and most continuously over time," Schwartz writes. "But that doesn't mean they're the most productive."