Fatigue is more than just feeling sleepy — it's a deep, persistent lack of energy that rest alone doesn't seem to fix. It can affect your body and your mind, making it hard to concentrate, stay motivated, or feel like yourself. There are many possible contributors to low energy, including poor sleep, chronic stress, hormonal changes, digestive issues, and an overall imbalance in the body. Often, several of these factors overlap, creating a cycle that's hard to break.