In line with a small 2018 examine revealed in Chronobiology Worldwide, sleeping upright might place the physique in a state of better physiological arousal, subsequently making sleep harder. The researchers defined that sleeping upright suppresses the physique’s “relaxation and digest” exercise, which is regulated by the parasympathetic nervous system. As an alternative, it prompts the physique’s sympathetic nervous system, which is related to stress and heightened consciousness corresponding to after we’re in “fight-or-flight” mode. This was evidenced by the truth that out of six examine members, sleeping for 4 hours in an upright seat decreased complete sleep time by 29%, slow-wave sleep by 30%, and REM sleep by 79% compared to sleeping in a chair that reclined utterly flat.
One other factor that may occur after we sleep sitting up is that our physique might change into extra inclined to blood clots, reviews Sleep Advisor. Prolonged time spent sitting can result in the event of deep vein thrombosis, during which blood clots kind within the legs. If these blood clots make their technique to different elements of the physique, corresponding to our respiratory tract, it may be life-threatening. Speak to your doctor when you expertise signs of ache, swelling, pores and skin discoloration, or pores and skin that feels heat to the contact.
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