Proactive 

The proactive component, or foundational nutrition, entails chronic disease prevention and immune system enhancement. 

Active 

The active component, or operational (occupational and environmental task-specific performance) nutrition, focuses on event fueling and post event recovery and arduous environment preparedness.

Reactive 

The reactive component, or therapeutic nutrition, centers on specific nutritional interventions to treat (as opposed to prevent) an illness, injury, or condition.