Experts reveal exact bedtime that could prevent late-night ‘second wind’ insomnia

Sleep experts reveal why going to bed after a certain time disrupts cortisol and melatonin balance, causing disrupted sleep.
ZME Science on MSN

The Eight-Hour Sleep Is a Modern Invention. Your Ancestors Had a “First” and “Second” Sleep. What Changed?

Continuous sleep is a modern habit, not an evolutionary constant, which helps explain why many of us still wake at 3am and ...

Before electricity, humans slept twice a night; scientists explain why biphasic sleep made perfect sense

Before electricity, humans naturally slept in two phases, waking for an hour or two around midnight for quiet activities.
Hawk Central

Do you get a 'second wind' during bedtime? Here's what it means.

After a long day of work, chores, errands and parenting, you can barely keep your eyes open. But instead of crashing into the soft bed you’ve been yearning for all day, you’re hit with an unexpected ...