How Earth’s Axis Affects Your Sleep Habits


Credit: Ron Garan

How Earth’s Axis Affects Your Sleep Habits

6), mostِ of theِ United States willِ enjoy theِ upside toِ theِ annual daylight saving time shift — setting ourِ clocks backِ by anِ hour.
Anita Valanju Shelgikar, director ofِ the sleep medicine fellowship program atِ the University ofِ Michigan.
It’s trulyِ easier toِ goِ this wayِ thanِ inِ the otherِ direction, Shelgikar said, referring toِ theِ spring-time shift forwardِ anِ hour.

Why turn back the clock?

Daylight saving time, whichِ isِ now ending, isِ anِ attempt toِ takeِ advantage ofِ the annual fluctuation inِ the amount ofِ time weِ seeِ the sun aboveِ the horizon.
This means thatِ asِ the Earth travels aroundِ the sun onِ itsِ annual course, oneِ hemisphere isِ tilted towardِ theِ sun, gettingِ more thanِ itsِ fair share ofِ light andِ warmth, whileِ theِ otherِ isِ titled awayِ andِ enduring winter.
This effect becomesِ stronger asِ you travel fartherِ north orِ south awayِ from theِ equator, soِ that summer atِ either pole means 24-hour sunlight, andِ winter means 24-hour darkness.

Dealing with darkness

Light isِ the mostِ important environmental cue thatِ tells ourِ brains toِ wake upِ inِ the morning, soِ darkness inِ the morning makesِ itِ hard toِ getِ out ofِ bed, Shelgikar said.
A routine alsoِ helps.
Shelgikar alsoِ recommends sticking toِ a set sleep schedule, withِ a fixed bedtime andِ a fixed wake time..