Experts from the UNN School of Social Sciences cyber psychology lab. NI Lobachevsky studied the dynamics of lethargy in Russians.
More than 200 people aged 25 to 72 years participated in the study. They rated their condition at a given time according to the “gold standards” – the Carolina and Stanford scales of sleepiness. At the same time, scientists added additional indicators to the questionnaires – gender, age, height, weight, presence of chronic diseases, presence of sleep problems, coffee consumption, driving experience and smoking, time to fall asleep and wake up.
However, unlike conventional experiments, sleepiness was monitored in vivo; participants did not need to sleep in the laboratory. They wore a heart rate monitor and assessed their condition from 8:00 pm until they fell asleep. In addition, the participants in the experiment described their sleepiness and waking moments at 6:00 in the morning.
It was at this time that the increased drowsiness from 20:00 appeared to have reached its peak. At the same time, more pronounced drowsiness was found in the evening in avid coffee drinkers. However, researchers reassure that a cup of coffee a day won’t harm sleep: problems with wakefulness are caused by the cumulative effect of caffeine.
Source: Ferra
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