According to a study by Warwick University in the United Kingdom if you sleep for less than six hours a night then this is bad for your body, it increases the possibility of an early death.
In a study research uncovered that if people get less than the suggested six to eight hours sleep each night were 12% more likely to die early! The research also found 25% of people get around only four to five hours' sleep a night, which is clearly not enough.
Long-term sleep deficiency is also believed to lead to diabetes, heart issues and/or obesity. In addition, to sleep more than the recommended 8 hours per night will lead to more health problems.