Sleep
Physiological Arousal Insomnia
Hyperactivated stress systems at night block sleep despite tiredness. Cut late intensity, caffeine, and overload before chasing supplements.
Physiological arousal insomnia is hyperactivation of stress systems at night—elevated heart rate, muscle tension, heat, and racing mind—despite fatigue. Overtraining, late intense exercise, caffeine, and unresolved stress are common contributors.
Downshift with consistent wind-down, breath work, and load reduction before adding supplements.
Common questions
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Can hard evening workouts cause arousal insomnia?
Late high-intensity sessions raise core temperature and sympathetic tone for hours in some people. Shift intense work earlier or finish with a long cool-down and dim light.
Related terms
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