Even though many people are resilient to accepting the harmful effects associated with sleep deprivation, I believe that lack of sleep is both detrimental to the brain and the general health.
Inarguably, sleeping late could be salutary at some times, especially if someone is overwhelmed with work overloads that require prompt submission. This is is due to utilizing extra hours of the day to finish delayed tasks. However, making this a frequently habit, is concomitant with many health issues. From a first hand perspective, the repercussions of cutting down on my sleeping hours in the last couple of months has significantly reduced my concentration, not to mention the pernicious effects it has had on my memory. Yet, these dire consequence were not surprising or coincidental. To validate my experience, I have obtained recent studies conducted by the university of Michigan, justifying that those who received less than 6 hours of night sleep were prone to many diseases, of which vascular diseases are the most common, amounting to 75 percent. Similarly aligned with this research, was that made by the world health organization, confirming that 70 percent of individuals constantly exposed to poor sleep were inevitably hit with heart diseases.
In a nutshell, although sleeping less could be mandatory at times, people should not make it a regular life tend. This is simply because anything violating the norm, could potentially lead to deleterious effects. Therefore, people should not recurrently sleep late. In fact, they should only stay up late in case of contingencies, to preserve both their mental and physical health.