What is the most common misconception when it comes to sleep?
That everyone needs eight hours. We need however much sleep we need, and that can differ between people, but it doesn’t mean that we need that exact amount every single night. If you’re someone that tends to sleep 7.5 hours, you don’t always need that much. It’s like eating—there are days when you eat more and days when you eat less. Sleep is not a static thing; it’s quite the opposite. Little kids need a lot of sleep, while older people need a little less (although that’s still debated). Sleep also doesn’t happen in isolation; there’s a day that comes before it, and a day that comes after it so if we don’t sleep exactly the same every single night, that’s ok.