Effect of Caffeine Intake on Bidirectionality of Sleep and Pain Relationship

50-70 million Americans suffer from sleep deficiency which is linked to adverse conditions including increased pain. As a mechanism, we hypothesize that caffeine intake will be inversely related to pain threshold, tolerance, and sleep quality. We will collect data on daily caffeine intake throughout the study. We will then assess pain at baseline and post a one-week sleep extension.  The results of this study on caffeine-sleep-pain dynamics may help alleviate the burden of sleep deficiency.