From dehydration to depression and inadequate sleep, a Bustle report examines five possible scientific reasons a person may have difficulty waking up in the morning.

So, this should be obvious, but it’s worth reminding everyone: If you chronically sleep through your alarm, and it’s leading you to miss obligations (or just have extremely stressful mornings) it’s important to step back and evaluate your sleep schedule. Are you getting close to the recommended seven to nine hours of sleep The National Sleep Foundation suggests you get a night? Even if you’ve formed a habit of getting by on minimal sleep, that fatigue is going to catch up with your body no matter how many alarms you set.

Now, a lot of people don’t have the luxury of having their evenings entirely to themselves (because of a second job, night classes, taking care of children, etc.), but it’s so important to prioritize your sleep because it has a huge impact on your health. If you know deep down you’re sleeping through your alarm because you’re exhausted, it’s time to reevaluate your sleep habits and see where you can squeeze in more hours of rest.

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