As sleep experts at Tom’s Guide, one of the most common questions we get from readers is: Why do I need so much sleep? For healthy adults, the amount of sleep required in order for you to function optimally ranges between seven and nine hours per night on a regular basis.
However, while external factors — such as whether you’re sleeping on the best mattress for your body compared to one that's severely impacting your physical comfort in bed — can mean you get less sleep than you need, other factors, such as illness or the time of year, can result in you needing more sleep than normal.
