More than 40 million Americans have anxiety, according to the Anxiety & Depression Association of America (ADAA). It’s the most common mental health problem in the United States. Even if you’ve had a good day, you can start to feel restless and anxious right before bed. The COVID-19 pandemic has also affected America’s nighttime anxiety. A 2021 survey by the American Academy of Sleep Medicine (AASM) found 56% of adults reported an increase in sleep problems since the pandemic began.