Sleep is a physiological state that helps in the smooth functioning of many organ systems in the body by maintaining the circadian rhythms. Human beings spend about one third of their life in sleep. Sleep hygiene is a practice of good quality and quantity of sleep, which ensures day time alertness of human beings. Economic development and shift based work culture lead to a reduction in the sleep time in the last two decades. Sleep hygiene is recognized as an important modifiable risk factor for type 2 diabetes mellitus. The prevalence of diabetes is at an alarming proportion in young individuals, possibly due to the sleep deprivation. Education about the proper sleep hygiene should be an integral part of the diabetes management. In this article, we describe the pathophysiological links between the sleep deprivation and diabetes along with lifestyle recommendations to improve the sleep hygiene.