Can Stress Cause Physical Fatigue?

Why psychological stress often produces real physical exhaustion.

Stress is frequently described as a mental experience. In reality it also affects the body.

Physiological Activation

Stress activates the sympathetic nervous system, increasing heart rate and alertness.

When this state continues for long periods, the body can become physically exhausted.

Physical fatigue does not always mean physical work. Psychological load can produce the same effect.

Why the nervous system often resists relaxation after prolonged stress.

Structural adjustments that reduce stress while remaining in demanding roles.

Recovery from burnout requires more than rest. It requires structural change.