Do you use your smartphone or tablet just before you head to bed? If so, it could impact your sleep schedule each night.

So says a study performed for two KXLY TV reporters by our Sleep and Performance Research Center.

Our own Devon Grant administered the study. Her theory, which is supported from the study of the two KXLY reporters, says that people fall asleep sooner if they stay away from their smartphones and tablets for an hour before going to bed.

So if you want a better night of sleep, you might want to avoid that e-reader in bed.