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  2. Metoprolol - Wikipedia

    en.wikipedia.org/wiki/Metoprolol

    Metoprolol is a beta blocker, or an antagonist of the β-adrenergic receptors. It is specifically a selective antagonist of the β 1-adrenergic receptor and has no intrinsic sympathomimetic activity. [37] Metoprolol exerts its effects by blocking the action of certain neurotransmitters, specifically adrenaline and noradrenaline.

  3. Deep sleep can keep two big health problems at bay, new ... - AOL

    www.aol.com/deep-sleep-keep-two-big-145255709.html

    Two new studies indicate the importance of getting a good night's sleep — with one study saying a lack of sleep may be sabotaging the brain’s ability to keep intrusive thoughts at bay.

  4. Middle-of-the-night insomnia - Wikipedia

    en.wikipedia.org/wiki/Middle-of-the-night_insomnia

    Sleep research conducted in the 1990s showed that such waking up during the night may be a natural sleep pattern, rather than a form of insomnia. [2] If interrupted sleep (called "biphasic sleeping" or " bimodal sleep ") is perceived as normal and not referred to as "insomnia", less distress is caused and a return to sleep usually occurs after ...

  5. Sleep inversion - Wikipedia

    en.wikipedia.org/wiki/Sleep_inversion

    Sleep inversion may be a symptom of elevated blood ammonia levels [2] and is often an early symptom of hepatic encephalopathy. [3] Sleep inversion is a feature of African trypanosomiasis, after which the disease takes its common name, "African sleeping sickness"; [4] sleep-wake cycle disturbances are the most common indication that the disease has reached the stage where infection spreads into ...

  6. Your better-sleep plan starts tonight (and why you need it now)

    www.aol.com/better-sleep-plan-starts-tonight...

    Or maybe you nod off as soon as you get in bed, but then wake up at 2 a.m. and can’t get back to sleep. Logging seven to nine hours of sleep each night is one of the best things you can do to ...

  7. How to Keep Daylight Saving Time From Ruining Your Sleep ...

    www.aol.com/keep-daylight-saving-time-ruining...

    Nap With Caution. If you feel yourself getting sleepy mid-afternoon, that's natural. "As humans, we all feel tired around the same time of day, 2–4 p.m.," says Smarr.

  8. Sleep deprivation - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation

    An indicator of sleep propensity can also be seen in the shortening of the transition from light stages of non-REM sleep to deeper slow-wave oscillations. [69] On average, the latency in healthy adults decreases by a few minutes after a night without sleep, and the latency from sleep onset to slow-wave sleep is halved. [69]

  9. Delayed sleep phase disorder - Wikipedia

    en.wikipedia.org/wiki/Delayed_sleep_phase_disorder

    One stays awake one whole night and day, then goes to bed 90 minutes earlier than usual and maintains the new bedtime for a week. This process is repeated weekly until the desired bedtime is reached. [42] Earlier exercise and meal times can also help promote earlier sleep times. [43]

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