There are few things more valuable than a good night's sleep. Your overall health and well-being depend on it.

When you sleep, your body recharges itself and prepares for the next day by storing new information and ridding itself of toxins, according to the National Institute of Neurological Disorders and Stroke. Sleep also gives the nerve cells in the brain time to communicate and reorganize so they can continue to function in a healthy way. And while the brain does all of that, the body releases important hormones and proteins and repairs cells to restore your energy.

Despite its importance, millions of Americans struggle regularly to get adequate sleep. According to the National Sleep Foundation, more than 35 percent of American adults get fewer than 7 hours of sleep each night.

If you've been struggling to get that restful 7-9 hours of sleep every night, here are some potential reasons why.

1. What you're