The amount of sleep a normal person requires depends on various factors such as age, gender, health issues, work life and many more. Generally, it is considered that 7 to 9 hours of sleep is enough for a normal person. But, the studies suggest that women need more sleep time than men as their brains work differently. Some people are also known for their less sleep without facing any difficulties in their day-to-day work life, but doctors have confirmed that these people face some health issues to an extent because of being sleep-deprived.