Poor sleep? Blame evolution
It has long been hypothesized that REM sleep and the stress response are linked, until now the mechanism has been unknown and might shed light on some mood disorder treatments.
Everybody hurts after a bad nights’ sleep, but the Nightmare on Elm Street nursery rhyme about fear and getting some shut eye might have been closer to the truth than the writers suspected. A study by researchers at the Shenzhen Institute of Advanced Technology (Shenzhen, China) shows why. Unlike the raisin-faced slasher antagonist, this discovery could stop you from losing your religion over a spasmodic snooze.