This post was updated Jan. 12 at 11:44 p.m. A recent UCLA study proposed that a certain stage of sleep has evolved to allow animals to maintain the baseline brain temperature required for them to stay ...

Any sleep tracker will show you that slumber is far from a passive affair. And no stage of sleep demonstrates that better than rapid eye movement, or REM, commonly called dream sleep. “It’s also ...

And, believe it or not, your genetic makeup dictates whether you’re more comfortable going to bed earlier or later within ...

Dreaming, memory-making, problem-solving: A lot happens during the most active sleep phase By Carolyn Todd Any sleep tracker will show you that slumber is far from a passive affair. And no stage of ...