In a well-designed training program, which GAS stage represents the period during which performance improves due to repeated exposure?

• A. Alarm
• B. Exhaustion
• C. Recovery
• D. Adaptation

Answer: (D)

The idea here is how the body responds to repeated training stress and progressively improves. After an initial alarm reaction to a new stimulus, the body adapts to that stress through physiological changes—stronger muscles, more efficient energy systems, and better repair processes—so performance improves with ongoing exposure. This phase is the adaptation (also described as resistance) stage, where the gains come from repeated training bouts. Existence of recovery is the necessary rest that makes adaptation possible, but the actual period of improvement due to repeated exposure is the adaptation stage. Exertion beyond recovery can lead to exhaustion, where performance drops. So, the best fit is adaptation.