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  2. Is 6 hours of sleep at night enough? - AOL

    www.aol.com/news/6-hours-sleep-night-enough...

    Long-term sleep deprivation is linked to an elevated risk of heart attack, stroke, hypertension, heart disease, diabetes, kidney disease and metabolic syndrome, the experts note.

  3. Not Everyone Needs the Same Amount of Sleep. Here's Why - AOL

    www.aol.com/not-everyone-needs-same-amount...

    A few sleep hacks. Go easy on alcohol and cannabis: Even a little bit of drinking can scramble your sleep—helping you drift off more easily, perhaps, but causing you to awaken more during the night.

  4. How to Know If 6 Hours of Sleep Is Enough - AOL

    www.aol.com/know-6-hours-sleep-enough-235900599.html

    Can you really get by with just 6 hours of sleep a night? Here's what to know and how to get more sleep.

  5. The Truth About Whether 7 Hours of Sleep Is Enough ... - AOL

    www.aol.com/truth-whether-7-hours-sleep...

    Risks Of Not Getting Enough Sleep 1. Cognitive impairment. The idea that rest is productive doesn't just look good on an Instagram tile. Like our phones, our brains need time to recharge—and ...

  6. Pulse pressure - Wikipedia

    en.wikipedia.org/wiki/Pulse_pressure

    Pulse pressure is calculated as the difference between the systolic blood pressure and the diastolic blood pressure. [3] [4]The systemic pulse pressure is approximately proportional to stroke volume, or the amount of blood ejected from the left ventricle during systole (pump action) and inversely proportional to the compliance (similar to elasticity) of the aorta.

  7. The No. 1 Best Side to Sleep on For Heart Health ... - AOL

    www.aol.com/no-1-best-side-sleep-232500371.html

    If your biggest concern about your heart is the burn you feel at 3 a.m., flip over to the left side and drift back to sleep. "Sleeping on the left side often helps with acid reflux," Dr. Vuppuluri ...

  8. Homeostasis - Wikipedia

    en.wikipedia.org/wiki/Homeostasis

    An effector is the target acted on, to bring about the change back to the normal state. At the cellular level, effectors include nuclear receptors that bring about changes in gene expression through up-regulation or down-regulation and act in negative feedback mechanisms. An example of this is in the control of bile acids in the liver. [4]

  9. Light effects on circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Light_effects_on_circadian...

    [6] [4] Light seems to have therapeutic antidepressant effects when an organism is exposed to it at appropriate times during the circadian rhythm, regulating the sleep-wake cycle. [ 6 ] [ 4 ] In addition to mood, learning and memory become impaired when the circadian system shifts due to light stimuli, [ 6 ] [ 20 ] which can be seen in studies ...