Anxiety

6 min read · Reviewed June 2026

Anxiety is the body's built-in alarm system — useful in small doses, but draining when it stays switched on. Everyone feels anxious sometimes. It becomes worth attention when worry is persistent, feels out of proportion to the situation, and starts interfering with daily life. The National Institute of Mental Health estimates that about a third of U.S. adolescents and adults experience an anxiety disorder at some point in their lives.

What anxiety actually is

Anxiety shows up in three places at once: the body (a racing heart, muscle tension, a churning stomach), the mind (worry, anticipating the worst, difficulty concentrating), and behavior (avoiding the things that trigger it).

Avoidance is the part that quietly keeps anxiety going. Steering clear of a feared situation brings relief in the moment, but according to NIMH the anxiety usually returns and can grow, because you never get the chance to learn that you could handle it.

What helps

Anxiety disorders are among the most treatable mental health conditions. Cognitive behavioral therapy (CBT) is the most studied talk therapy for anxiety; acceptance and commitment therapy (ACT) also has growing evidence. For some people a healthcare provider may recommend medication, on its own or alongside therapy.

Everyday habits matter too. NIMH notes that exercise, mindfulness, and meditation can reduce anxiety symptoms and improve the effects of therapy. They are not a replacement for professional care when anxiety is severe, but they are a reasonable place to start.

A technique to try: box breathing

Box breathing is a simple paced-breathing exercise. According to Cleveland Clinic, slow, deliberate breathing helps activate the parasympathetic nervous system — the body's "rest and digest" mode — which counters the fight-or-flight response that anxiety switches on.

Breathe in through your nose for a count of four, hold for four, breathe out through your mouth for four, hold for four, and repeat for a few rounds. If four counts feels long, start with two or three. Stop if you feel lightheaded.

Key points

Anxiety is normal; it becomes a concern when it is persistent and interferes with daily life.
Avoidance relieves anxiety briefly but tends to maintain it over time.
CBT and ACT are effective; exercise and mindfulness can help alongside them.
Paced breathing (e.g. box breathing) can calm the body's stress response in the moment.

When to seek help

If anxiety has interfered with work, school, or relationships for several weeks, talk with a healthcare provider. If you are having thoughts of harming yourself, use the urgent-help numbers at the top of this screen now.