Have you ever noticed how some people bounce out of bed after just a few hours of sleep, while others can barely function ...

That’s pretty incredible, given that the average person sleeps ... families with shortened sleep cycles. Again, mice engineered with those mutations slept less, with no obvious health consequences.

Yet no matter what he did to get a better ... Because of this, sleep trackers are better at measuring when a person is asleep or awake rather than specific phases of sleep, like rapid-eye movement ...

I'm a bath person, so it's nice to be told I can ... One thing I found reassuring is that no two nights of sleep look the same, and our bodies change their patterns as we age.

Obstructive sleep apnea is when a person stops breathing five or more times ... those who had fewer than five sleep disruptions per hour, or no sleep problems; those with five to 15 disruptions ...