Caffeine - Physiological effect.

Caffeine for the sustainment of mental task performance = formulations for military operations. by: (Language materials, printed)

Caffeine and behavior = current views and research trends / by: (Language materials, printed)

Coffee, tea, chocolate, and the brain by: (Language materials, printed)

Tea- physiology.

Military Personnel.

Caffeine- Psychological aspects.

Brain- Effect of drugs on.

Caffeine- Physiological effect.

Brain- drug effects.

Coffee- physiology.

Cognition- drug effects.

Central Nervous System Stimulants- pharmacology.

Cognition- Effect of drugs on.

Nootropic agents.

Soldiers- Health and hygiene- United States.

Coffee- Physiological effect.

Chocolate- Physiological effect.

Neurochemistry.

Caffeine- pharmacology.

Wakefulness- drug effects.

Tea- Physiological effect.

Cacao- physiology.