Which GAS stage involves the body progressively improving in response to ongoing training, typically within 4-12 weeks?

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

Answer: (B)

When training is ongoing, the body moves from an initial alarm response into a stage of progressive adaptation. After you begin training, your body first reacts to the new stress with temporary fatigue and hormonal changes—the alarm phase. With consistent effort and adequate recovery, it shifts into a phase where it becomes better suited to handle that stress, leading to improvements in strength, endurance, and efficiency. This adaptation typically shows up over roughly 4 to 12 weeks as the muscles, nervous system, and energy systems become more efficient through changes like increased mitochondrial density, enzyme activity, and better neural recruitment. If the load stays high without enough recovery, performance can drop in the exhaustion phase. Recovery itself is the rest needed between sessions, not the ongoing stage of adaptation.