Summary
Managing cortisol levels through various daily habits and techniques, such as light exposure, diet, exercise, and relaxation methods, is crucial to overcoming burnout and maintaining overall health and well-being.
Cortisol Fundamentals
Cortisol is an energy-producing hormone, not a stress hormone, that deploys glucose into the bloodstream to deal with stressors and energy-demanding tasks.
Cortisol follows a 24-hour circadian rhythm crucial for health, with levels peaking in the morning and dropping in the evening.
Viewing bright light within the first hour of waking can amplify cortisol levels, triggering a negative feedback loop that causes cortisol to gradually decline throughout the day.
Optimizing Cortisol Rhythm
Hydrating with 16-32 ounces of water and electrolytes first thing in the morning can increase alertness by stimulating the adrenals to release epinephrine, adrenaline, and cortisol.
For habitual caffeine users, drinking coffee 30-90 minutes after waking can help flatten the cortisol downslope in the late morning and early afternoon.
Regular exercise provides a strong entrainment cue that reinforces cortisol release timing, leading to a Pavlovian response that increases energy and anticipatory cortisol.
Evening Cortisol Management
In the evening, bright light from artificial sources can cause significant increases in cortisol, which is undesirable for sleep preparation.
Consuming starchy carbohydrates like rice, potatoes, or yams in the evening helps keep cortisol low by elevating blood glucose levels.
Practicing exhale-emphasized breathing or physiological sighs in the evening can quickly calm down and reduce stress, lowering cortisol levels.
Cortisol and Diet
Eating a grapefruit in the morning can increase cortisol by 25-50% by inhibiting the enzyme that breaks down cortisol.
Consuming black licorice can significantly boost cortisol levels by inhibiting the enzyme that converts cortisol to cortisone.
Low-carb diets can cause a significant increase in cortisol levels for the first 3 weeks, but this normalizes after that period.
Cortisol and Sleep
Cortisol levels are supposed to start rising 2 hours before waking up, not abruptly from flat to vertical.
If waking up with high stress, using non-sleep deep rest (NSDR) or yoga nidra can help reduce cortisol levels by engaging the parasympathetic nervous system.
Cortisol and Health
Mastering the cortisol rhythm pattern can improve overall well-being, energy, focus, sleep quality, and mood, and can even improve cognition and memory by reducing degeneration of cortisol receptors in the hippocampus.
Getting the cortisol rhythm right can be transformative for health and performance by increasing daytime energy, focus, mood, and stress resilience, while also improving sleep quality.
Practical Tools for Cortisol Management
Implementing a 10-30 minute NSDR practice right after waking up can help adjust the slope of cortisol rise in the morning, reducing anxiety and burnout.
To control lighting in the evening and keep cortisol low, dim indoor lights as much as possible and use red light bulbs or restricted wavelength glasses.
Practicing physiological sighs for 5 minutes in the evening, involving double inhale and long exhale, can help calm the body and mind, reduce stress and anxiety, and improve sleep quality and mood.
The ideal exercise pattern for cortisol rhythm is early in the day after sunlight exposure, as late-day exercise can spike cortisol and disrupt sleep.