From weird dreams and nightmares to increased insomnia, the coronavirus pandemic has stimulated some unusual sleep issues for many people.

As a behavioral sleep researcher at theUniversity of Alabama at Birmingham, a number of patients have been asking: "Why is this happening, and what can I do to stop it?"

We do most of our dreaming during a stage of sleep called "rapid eye movement." This is when the brain grows more active and revs up the amygdala and hippocampus (regions of the brain that deal with emotions and memories).

In this time of heightened fear and distress, the brain has even more emotional demands to process. And because our brain likes order, the frontal lobes attempt to process, organize and integrate our thoughts to make sense of the chaos of REM neural signals (which is what produces those dreams).

In other words, our colorful yet strange dreams may be a reflection of the negative emotions invited by Covid-19.

Like so many others, I've also had my fair share of weird and memorable dreams since the pandemic.

In one dream, I boarded a cruise ship, dressed head to toe in bubble wrap and carrying nothing but a roll of toilet paper. In another, I slept through my shift at the telemedicine clinic and missed all my patients.

Luckily, I've been able to get those unwanted dreams under control. Here's what I've been doing to sleep better at night:

1. I wake up at the same time every day.

We tend to keep a consistent sleep schedule mostly during the weekdays. But I'm now waking up at 5:30 a.m., seven days a week.

This helps because the body rewards regularity: People who wake up at the same time experience more metabolic health, improved cognition and enhanced emotion regulation.

To keep myself accountable, I place my alarm clock across the room so that I have to get out of bed to turn it off. I've also created an enjoyable morning routine that involves coffee and gratitude journaling outside, where I can bask in the morning light.

Having something pleasant to look forward to makes waking up easier, while the natural light helps entrain my circadian rhythm.

2.I do everything I can to stay active during the day.

This can be a difficult task during a time of social distancing and quarantining. It now feels nearly impossible to get in as much physical movement as I did before the pandemic.

But it's still important to try.Vigorous, moderate or even mild cardiovascular exercise (i.e., walking or doing household chores) stimulates adenosine, which helps build sleep pressure or the body's "hunger" for sleep. And an increased sleep pressure means less likelihood of anxiety or insomnia.

However, I avoid exercising too much in the evenings.Research has shown that intense physical activity within one hour of bedtime can reduce sleep time, while also making it harder to wake up.

3. I use my bed for three things: Sleep,sex and rest (if I'm sick).

Everything else watching, reading or anxiously scrolling through my phone for news about Covid-19 happens out of the bed.

With more time spent inside, people may start adopting the habit of eating, working or binge-watching Netflix in bed. This can be disruptive to our sleep, because it trains the brain to associate the bed with daytime activities, rather than a place for resting.

Even on nights when I find myself unable to sleep, I'll get out of bed and go to another room. Keeping a dim light on, I'll do something relaxing, like guided meditation or fold the laundry. When I'm finally sleepy again, I'll return to bed.

4.I take a bath before bedtime and avoid devices.

Darkness facilitates healthy production of melatonin, a hormone that promotes drowsiness; whereas light interrupts it. So at least one hour before bedtime, I try to reduce my exposure to light-emitting devices, such as my phone, laptop and TV.

Instead, I take hot bath or shower.According to studies, our core body temperature needs to drop by about2 to 3 degrees Fahrenheit to maintain deep sleep and soaking yourself in warm water can help.

Most people think it's easier to fall asleep after a bath because your body is nice and toasty.But the opposite happens: It actually brings the heat from the core of your body to the surface, thus naturally cooling the body andpromoting a more peaceful sleep.

Christina Pierpaoli Parker is a behavioral sleep researcher and clinical psychology resident at the University of Alabama at Birmingham. She writes about sleep forPsychology Today and HealthDay, and her work has been published in the Journals of Aging & Health, Geriatric Psychiatryand The Clinical Gerontologist.

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This sleep expert also had 'weird dreams and nightmares' since Covid-19. Here's what she does now to sleep better - CNBC

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