When it comes to measuring sleep, most people focus on hitting a certain number of hours each night and while that’s part of the equation, experts say it might not be the most important metric. Instead, a recent review suggests that the regularity of sleep drifting off and waking up at roughly the
When it comes to measuring sleep, most people focus on hitting a certain number of hours each night. While that’s part of the equation, experts say it might not be the most important metric.