Why Your Sleep Schedule Might Be Working Against You You set the alarm. You go to bed at a "reasonable" hour. And yet — you still drag yourself through mornings like you're wading through wet cement, or you lie wide awake at 11 PM staring at the ceiling while the rest of the household sleeps soundly. Here's what most sleep advice gets wrong: it assumes everyone operates on the same biological clock. They don't. The science of sleep chronotypes reveals that your ideal sleep and wake time is not a matter of discipline — it's largely written into your DNA. Understanding your chronotype could be the single most impactful change you make to your energy, mood, productivity, and long-term health. "Your chronotype is as biological as your height or eye color. Working against it doesn't make you disciplined — it makes you sleep-deprived." What Is a Sleep Chronotype? A sleep chronotype is your body's natural preference for when to sl...