Why 3 AM Wake-Ups Harm Your Daytime Energy and Mood

You wake up at 3 AM due to common causes like stress, aging, hormonal changes, or environmental disruptions, which fragment sleep and cause next-day fatigue, irritability, and reduced cognitive performance.

• About 23% of adults experience middle-of-the-night awakenings weekly, often around 3 AM.
• Stress, age, environmental factors like noise or temperature, and hormonal changes contribute to these disruptions.