One of the areas of the brain that’s most active during dreaming is the amygdala - the part of the brain associated with the survival instinct and the fight-or-flight response.
One theory suggests dreams may be the brain’s way of getting you ready to deal with a threat. Fortunately, the brainstem sends out nerve signals during REM sleep that relax your muscles. That way you don’t try to run or punch in your sleep.
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Similar ideas to Fight-or-flight training
The fight or flight response is a powerful survival reaction. Once we perceive danger, adrenalin increases our heart rate and move our attention toward fighting off or fleeing from the threat.
We may become so focused on that goal that we may not process any extra details ...
Dreaming accounts for 20% of our sleeping time.
The length of dreams can vary from a few seconds to almost an hour. During REM sleep, the brain is highly active. The muscles are paralyzed, and the heart rate increases. Breathing can become erratic.
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