Tuesday — Cortisol: The Stress Hormone  

Cortisol often gets labeled as the “bad” stress hormone — but that’s only part of the story. Cortisol is essential for survival. Released by your adrenal glands, it helps control blood sugar, regulate metabolism, reduce inflammation, and manage your sleep-wake cycle. 

Cortisol naturally rises in the morning to help wake you up and slowly declines throughout the day. This rhythm is healthy. Problems arise when cortisol stays elevated for too long — something that can happen with chronic stress, lack of sleep, or overtraining. Persistently high cortisol is linked with weight gain around the midsection, trouble sleeping, and higher risk of insulin resistance. 

The good news? You can help balance cortisol with daily habits: 

• Prioritize sleep: 7–9 hours helps restore normal rhythms. 

• Manage stress: Deep breathing, walking, or meditation can lower spikes. 

• Exercise smart: Intense workouts are good, but too much without recovery can raise cortisol. Balance strength training with lower-intensity movement. 

Cortisol isn’t your enemy — it’s your body’s built-in alarm system. The key is balance. Support your natural rhythm, and cortisol will work for you, not against you. 

References: Sapolsky, R. (2004). Why Zebras Don’t Get Ulcers; National Institute of Health, “Cortisol: What It Does.”