Biphasic sleep refers to a sleep schedule where a person sleeps for two segments per day. For example, sleeping during nighttime hours and taking a midday nap. Learn what the research tells us ...

A regular, sufficient sleeping pattern is vital to good physical and mental health. This MNT Knowledge Center article explores and explains biphasic and polyphasic sleep patterns. MNT looks at how ...

And if you do lean into biphasic sleep, listen to your body's natural cues telling you to rest. "Go to sleep the second you're getting tired," Mednick said. "Don't try to soldier on." ...

Biphasic anaphylaxis strikes when you’ve survived the initial attack and all seems well. The second attack can occur up to 72 hours after the first. Symptoms of a second reaction commonly peak ...

This is referred to as biphasic sleep. Prior to biphasic sleep, some historians believe that hunter-gatherer societies slept in one smaller stretch throughout the night — closer to how we do now.

In modern times, many biphasic sleepers use a different model. Checking in with the surprisingly popular r/polyphasic community on Reddit, most favour a bedtime of midnight, a rising time of 6am ...

For millennia, people slept in two shifts – once in the evening, and once in the morning. But why? And how did the habit disappear?