The quest for sufficient baby sleep is a universal parent concern, often fraught with conflicting advice and anxieties.

Though it might seem like the question "How much sleep do you need" gets a new answer every other week, the The National Sleep Foundation says its new chart breaks the question down like never before.

Add Yahoo as a preferred source to see more of our stories on Google. A solid night's sleep can feel elusive, and the commonly-held idea that you "should" be getting eight hours of sleep might ...

Sleep is one of those things that works better the less you try to control it.

You’ve probably heard the standard advice about getting eight hours of sleep. Maybe you even pride yourself on catching those full eight hours whenever possible—even if that means sleeping until noon ...