Everyone experiences insomnia after a night of minimal sleep. According to research, even after a night without enough sleep, people can feel tired during the day with a lack of concentration, lethargy, and irritable moods. Sleep Deprivation What most don’t know is that sleep deprivation, or what most refer to as sleep deficiency, is one of the main causes of chronic health … [Read more...] about Sleep Deprivation: How Well Do You Know It?