The argument on how much sleep is necessary for the average human is an ongoing debate, one that looks like a definitive conclusion is still far off, but I think we can all agree sleep as a whole is hugely important to us as humans.
Many argue that the required amount of sleep one needs varies from person to person. You may only properly function after a solid 8 hours sleep while your ‘morning friend’ is bright and perky after just 6 hours. This seems highly unfair, but it is what it is. However there are ways to help combat that ‘groggy morning’ feeling.