Many people assume that persistent fatigue is caused by stress, aging, or lack of sleep. However, a significant number of individuals sleep for adequate hours and still wake up feeling unrefreshed. One overlooked reason is sleep apnea, a condition that disrupts breathing during sleep and prevents the body from entering truly restorative rest. This article examines how sleep apnea works, why it often goes undiagnosed, and how it silently affects daily energy, cognition, and long-term health.
