In this episode, we follow the story of Emma, a seemingly healthy woman who discovers an unexpected connection between her atrial fibrillation and undiagnosed sleep apnea. Despite leading an active lifestyle, her fluctuating oxygen levels during sleep went unnoticed until persistent monitoring revealed the silent stress her heart was under. Using the Wellue O2Ring, Emma began tracking her oxygen levels nightly, uncovering dangerous dips that traditional methods had missed. The episode highlights how consistent at-home monitoring, like with the Wellue O2Ring, can provide critical insights into conditions that might otherwise remain hidden.