Cortisol Kill-Switch: Exercise Rewires Stress Biology
- A 12-month clinical trial found that consistent aerobic exercise lowered long-term cortisol levels, showing your body can reduce chronic stress when you train it regularly
- About 150 minutes per week of moderate-to-vigorous movement was enough to create measurable changes, making stress reduction achievable with a realistic routine
- Cortisol is not just a stress hormone but a survival tool that stabilizes blood sugar, yet chronically high levels shift your body into a constant state of dysfunction
- Exercise improves your stress response even without weight loss, meaning your internal systems become more resilient before you see physical changes
- Combining steady exercise, enough carbohydrates, and proper recovery helps break the stress cycle at its root so your body stops reacting as if it's under constant threat
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