"The notion that better sleep makes a better marriage isn’t entirely new. A large body of research suggests that sleep-deprived people are more unpleasant and even hostile in their social interactions than those who get adequate sleep. People tend to use more negative words when they are sleep deprived than on...
"You might think of sleep as the negative time in your day when nothing on your to-do list gets done. Your brain and several other systems in your body see it quite differently."
"The best thing for your relationship could be sleep. A study shows tired couples have nastier fights. Ohio State studied 43 married couples. Each person ranged in sleep from 3.5 to 9 hours a night. Researchers filmed the couples arguing. Couples who slept less than 7 hours tended to be more hostile. Couples with more sleep were more constructive."
"Sleep, along with physical conditioning and conscious eating, plays a major role in athletic performance and competitive results. A 2009 study in the journal Sleep confirms the role of sleep in performance: The study found that sleep deprivation negatively affected split-second, or ‘gut-feeling’ decision-making, while adequate sleep improved it."