Exercise and Anxiety — How Physical Activity Helps and When It Doesn't

Exercise is one of the most evidence-based supportive interventions for anxiety disorder. It burns the adrenaline mobilised by the fight-or-flight response, produces endorphins, reduces cortisol, improves sleep, and — with consistent practice — has a measurable normalising effect on the HPA axis stress response. But it is a support for recovery, not a recovery mechanism itself. Understanding both its value and its limitations helps set realistic expectations.

How Exercise Reduces Anxiety

• Burns excess adrenaline — the physical action the stress response was preparing for
• Produces endorphins — natural mood-elevating chemicals with anxiolytic effects
• Reduces cortisol levels — particularly significant with regular aerobic exercise
• Improves sleep quality — critical for amygdala regulation
• Increases GABA — the brain's primary inhibitory neurotransmitter
• Reduces inflammatory markers associated with anxiety and depression
• Provides a sense of agency and achievement — particularly important in avoidant anxiety

Exercise Anxiety — When Exercise Makes Things Worse

Some people with anxiety disorder find that exercise worsens their anxiety — particularly intense cardio exercise. The physiological effects of vigorous exercise (increased heart rate, breathlessness, sweating, flushing) closely mimic the physical symptoms of a panic attack. For someone with heightened interoceptive awareness — acutely monitoring their body for danger — these sensations can trigger the anxiety response they were meant to relieve. Starting with moderate-intensity exercise (walking, swimming) and gradually increasing intensity is the recommended approach.

Optimising Exercise for Anxiety Recovery

Regular aerobic exercise — 30 minutes most days — provides meaningful biological support for anxiety recovery. Walking is particularly effective for people with severe anxiety, providing movement without the cardiovascular activation that can trigger interoceptive anxiety. Exercise works synergistically with The Linden Method's recovery process — supporting the physiological normalisation that the program produces.