Is seven hours ideal, or does the right amount differ per person?
You may have heard that you should get seven hours of sleep per night. Or eight. It turns out that the quality of your sleep may be much more critical than the quantity, according to a study by Fitbit. The fitness product manufacturer did not compile its research in a lab, but by assessing data collected on its wearable devices during more than 3 billion nights of tracked sleep. It then compared this data against user scores on its Think Fast smartwatch app, a game designed to test intellectual readiness. It found that users with the highest scores were those who got about six to six-and-a-half hours of sleep in a night.
1 - cnbc.com/2018/08/30/you-might-not-need-as-much-sleep-as-you-think.html [8/30/18]