Millions of people might think they don't need to worry about getting enough sleep as going to bed is easy for them. However, they could be suffering from a serious issue. Falling asleep within five minutes could be a strong indicator of severe sleep deprivation. The Sleep Health Foundation recommends seven to nine hours of sleep each night for adults aged 18 to 64. However, this is not always possible, with one in five people admitting they aren’t getting enough sleep, leading to deprivation.