You may be eating the right foods, exercising regularly, and trying to manage stress–but still feel off. Many people don’t realize that one of the most important factors in how we feel is something we often overlook: our circadian rhythm, also known as our internal clock. This natural 24-hour cycle affects multiple biological systems, and its most powerful connection is to cortisol, your body’s primary stress hormone. When your sleep, light exposure, and daily habits fall out of sync with this rhythm, it can lead to poor energy, unstable moods, and long-term health issues. This week on Fox 17, Dr. Bitner talks about how you can retrain your internal clock with a few simple changes.
Fact #1
Cortisol isn’t bad, it’s just about timing. Cortisol is often blamed for weight gain, anxiety, or inflammation. However, cortisol isn’t the issue. The issue is simply timing. Cortisol is supposed to rise naturally in the early morning, helping you wake up, feel alert, and manage inflammation throughout the day. As the day winds down, cortisol levels should drop while melatonin rises, helping you relax and fall asleep. When your cortisol rhythm is disrupted, it can stay elevated in the evening or spike at the wrong time. This “off-pattern” cortisol can make you feel wired at night and sluggish during the day, contributing to symptoms of weight gain, irritability, and poor focus.
Fact #2
Circadian rhythm is your internal clock that runs on a 24-hour loop. This biological cycle depends on light and sleep. When you don’t get at least 7 hours of sleep consistently, it throws your rhythm off completely. Your cortisol might spike at night (making sleep more difficult), your blood sugar may rise, and your immune system can suffer. Over time, this increases your risk for conditions like heart disease, diabetes, and depression.
Fact #3
Daily structure supports hormonal balance. Your internal clock thrives on consistency. Waking, sleeping, eating, hydrating, and moving at similar times every day helps regulate and reinforce your natural cortisol levels. Wearable devices like smartwatches or rings can track your personal trends and help you learn whether you’re naturally an early bird or a night owl.
Meet the SEEDS of Healthy Rhythm
To stay in sync with your body and support cortisol balance, Dr. Bitner recommends focusing on the Seven Essential Elements for Daily Success, also known as SEEDS:
- Water: Drink 80oz daily. Staying hydrated helps with nutrient transport, brain function, and hormone regulation. Dehydration can raise cortisol and make you feel more stressed than you are.
- Sleep: Aim for 7-9 hours of quality sleep each night. Poor sleep leads to cortisol spikes, immune dysfunction, and difficulty recovering from stress.
- Vitamins: Key nutrients like vitamin D, B-complex, and magnesium play major roles in hormone balance, energy production, and nervous system health.
- Fiber: A high-fiber diet supports blood sugar regulation, gut health, and inflammation control—all of which help keep cortisol levels stable.
- Nutrients: Fuel your body with whole foods rich in antioxidants, protein, and healthy fats to support your body’s natural healing and energy cycles.
- Activity: Daily movement—especially morning activity—supports a healthy cortisol pattern, improves mood, and reduces stress.
- Mind-Body Connection: Practices metered breathing and gratitude lower cortisol and help regulate emotional responses.
These SEEDS aren’t about being perfect, they’re about building reliable routines that support your body’s natural rhythm.
Takeaway Tip
Structure your updated wellness habits around your circadian rhythm. Aligning your day with your body’s internal clock helps you regulate cortisol, feel more energized, and sleep more deeply. Start with small shifts—like morning sunlight, earlier meals, and intentional downtime—and build on it from there. When you support your circadian rhythm, your body supports you right back.