You're constantly stressed
About 40% of adults say that stress makes it hard for them to sleep, and about 20% say they're more stressed when they don't sleep enough. At first glance it seems like that just sucks, but being aware of the relationship between stress and sleep can help you trick the system. Wind down before bed to sleep better, and try to carve out more time in bed during weeks that are really crazy. Or get some exercise in — during exercise your body produces stress-reducing endorphins, and having an active day will make it easier to rest at night.
You intentionally skimp on sleep
You've gotta sleep, but too many people treat it as an option, something that can be eliminated at will. But not getting enough sleep wrecks your focus, immunity, and your mood -- bad news on all fronts.
So how much is enough? The consensus is that you need at least seven hours, and that seven to nine hours is healthy for most adults. That's a pretty wide range, but it's because everyone is different. "The amount that you need to sleep is a characteristic of each individual, much like your height, weight, and eye color,” points out Dr. Pace-Schott. You need to tune into what your body's telling you to find that sweet spot.
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Marina Komarovsky is a freelance writer for Thrillist, and she's still trying to master the power nap. For more health studies and health news, follow her tweets: @MariKomarovsky.