What exactly is the 4-hour rule concerning CPAP therapy? It’s intriguing to see how this guideline has potentially impacted the management of sleep apnea. Many people are curious about its importance in ensuring effective treatment outcomes. Why is it recommended that users wear their CPAP devices for at least four hours each night? Does this duration significantly influence the efficacy of the therapy? Could it contribute to better overall sleep quality and health benefits? With so many variables at play, I wonder how individuals navigating this requirement might perceive its importance and practicality in their daily lives. What are your thoughts on this fascinating guideline?