Even if you manage to sleep a full eight hours and never wake up during the night, a cup of coffee can quietly rob you of proper recovery, researchers at Wrocław Medical University have found, according to infohub.kz.
As ScienceDaily reports, many people mistakenly believe that if they can fall asleep quickly after a coffee, the drink has no effect on their body. But special instruments have shown that under the influence of caffeine, the brain produces fewer slow waves, which are responsible for deep sleep. As a result, a person spends enough time in bed but wakes up tired.
The danger is that the person may not even be aware of the problem. Subjectively, they feel they have slept soundly all night, while the brain was operating in a more wakeful mode. This disrupts the processes of energy renewal and recovery. Sensitivity to the drink varies from person to person — for some, even a daytime serving of the invigorating beverage can disrupt the nighttime deep sleep phase.
As a result, a person enters a vicious circle. Having failed to get proper rest at night, the next day they feel exhausted and reach for another cup of coffee. Scientists emphasize that caffeine is not an unequivocally bad or good substance, but when consuming it, it is important to consider individual sensitivity, time of day and overall stress levels.