- Cortisol is a survival hormone, not a stress byproduct. You need it.
- Chronically elevated cortisol is real — but “cortisol face,” “cortisol belly,” and adrenal cocktails mostly aren’t.
- Sleep, protein, and light exposure do more for cortisol than any supplement on the shelf.
Three years ago, Tessa was exhausted all the time. Sleeping 8 hours and waking tired. Training felt heavy. She had constant low-level anxiety and skin issues. Her cycle was irregular. She was eating "clean" and training hard but felt worse, not better.
Her doctor ran bloodwork. "Everything's normal," he said. So was the dermatologist. So was the therapist (she went to one, which was good, but it wasn't the root issue).
Eventually, she got her cortisol tested. It was elevated. Not dangerously, but chronically. She had a cortisol problem, not a food or training problem.
This is that story, and what actually helped.
What Is Cortisol, Really?
Cortisol is a stress hormone made by your adrenal glands. It's not inherently bad—you need it. Cortisol wakes you up, helps you deal with acute stress (like a car honking), and supports energy and immune function.
The natural pattern: Cortisol should be high in the morning (wakes you up), gradually decrease throughout the day, and be low at night (lets you sleep). This is called a healthy cortisol curve.
The problem: Chronic stress (work stress, poor sleep, overtraining, chronic calorie restriction, caffeine abuse) keeps cortisol elevated all day and night. Your body is constantly in "fight or flight" mode, even when you're resting. This leads to all kinds of problems.
“You don’t have a cortisol problem. You probably have a sleep problem, a food problem, or a boundaries problem.”
The Signs Tessa Had (And Might Sound Familiar)
- Exhaustion despite adequate sleep: She'd sleep 8 hours and feel like she'd slept 4. Her nervous system was never resting.
- Anxiety that won't quit: Not panic attacks, just constant low-level "something's wrong" feeling.
- Irregular cycle: Her period was unpredictable. Sometimes 28 days, sometimes 35. Cortisol dysregulates reproductive hormones.
- Skin issues: Breakouts that didn't respond to skincare. (This usually means hormonal, not topical.)
- Poor recovery from training: She'd do a workout and feel destroyed for days. Not good "muscle soreness," but actual exhaustion.
- Bloating and digestive issues: Chronic cortisol affects gut health and increases inflammation.
- Cravings: Constant desire for sugar and salt. High cortisol drives appetite dysregulation.
- Hair loss: Not dramatic, but more hair in the shower than usual. (This resolved when her cortisol came down.)
What Wasn't The Problem
Tessa's instinct was to "train harder" and "eat cleaner." Both made things worse. Here's why:
Training harder = more cortisol stress. Her body needed recovery, not more stimulus. Heavy training is a stress that requires adequate sleep and nutrition to recover from. If you're already cortisol-dysregulated, added training stress is the last thing you need.
Eating cleaner/less = more cortisol stress. She cut carbs. She started restricting. This is chronic dietary stress, which elevates cortisol. Her body interpreted it as "famine" and responded accordingly (irregular cycle, low energy, slow metabolism).
She was caught in a loop: stress elevates cortisol, elevated cortisol makes you want to exercise and restrict to "fix it," but that drives cortisol higher.
What Actually Fixed It
Once Tessa realized this was a chronic stress/recovery problem, not a training/diet problem, the approach changed entirely.
1. Sleep became priority #1
Not "try to sleep better." Full overhaul.
- No screens 1 hour before bed
- Cool, dark room (she got blackout curtains)
- Magnesium glycinate 300mg before bed (this helped a lot)
- Consistent bedtime (within 30 minutes every night)
- No caffeine after 1pm
Sleep is where your nervous system resets. Without it, cortisol won't come down. This alone took 3-4 weeks to show results, but her energy during the day improved first, then anxiety decreased.
2. Nutrition changed from restriction to adequacy
She went from cutting and restricting to eating enough calories, carbs, and protein.
- Added carbs back (especially around training)
- Consistent protein intake
- Stopped tracking obsessively
- Ate when hungry, didn't force meals, but also didn't restrict
Her cycle regulated within 2 months. Her energy improved. The bloating decreased (ironically, eating more helped, not less).
3. Training reduced to recovery
She dropped from 5-6 training days per week to 3 days of moderate intensity. No HIIT. No metabolic conditioning. Just strength, technique, and movement.
Within weeks, she felt better. Her body wasn't constantly trying to recover from training stress.
4. Stress management became actual priority
Not "find a hobby." Actual parasympathetic activation.
- 20-30 minutes of walking daily (not intense, just walking)
- Meditation or breathing work (she used the Wim Hof method, anything systematic helps)
- Saying no to things that weren't essential
- Taking breaks during the workday
Walking specifically was huge. It activates the parasympathetic nervous system (rest and digest mode) without the stress of exercise.
5. Supplements that helped
- Magnesium glycinate (300mg before bed): Supports sleep and calms the nervous system. This was transformative.
- Omega-3s: Anti-inflammatory, supports mood and brain health.
- Vitamin D: Low vitamin D is associated with higher anxiety and depression. Getting to optimal levels (2,000 IU daily) helped.
- Adaptogenic herbs (optional): She used ashwagandha for a few months to support stress resilience. Not a long-term thing, just while resetting.
None of these are magic. They support the fundamentals, but fundamentals are sleep, stress management, and adequate nutrition.
The Timeline
Week 1-2: She felt worse initially (sleep disruption, appetite changes). This is normal as the nervous system begins to reset.
Week 3-4: Energy during the day improved noticeably. Anxiety began to decrease. Sleep was deeper.
Week 6-8: Cycle regulated. Skin cleared. Bloating resolved. Anxiety was mostly gone.
Week 12: Got cortisol retested. Levels were normal. Morning energy was natural (no caffeine needed). Sleep was restorative.
Month 4+: She gradually added training back (more intensity, more volume). Her body could handle it again because the recovery systems were working.
Now
Tessa is back to training 5 days per week, doing heavy lifts and conditioning. But the difference is she's recovering properly, sleeping well, eating enough, and managing stress. Her cortisol is normal, her cycle is regular, her skin is clear, and her energy is stable.
More importantly, she knows the difference between "I need more training/less food" and "I need more sleep/less stress."
If This Resonates With You
Get cortisol tested. A simple saliva test (4 samples throughout the day) shows your cortisol curve. Blood test works too, though it's a snapshot. Knowing your actual levels beats guessing.
Don't overcomplicate the fix. The solution is unglamorous: sleep, adequate nutrition, stress management, movement that doesn't stress you. No special supplements, no biohacking, no complex protocols. Boring fixes are usually the best fixes.
Trust the process. Recovery from cortisol dysregulation takes weeks, not days. You're resetting your nervous system, which takes time. But the results are worth it.
This is body-specific. Tessa's cortisol problem came from overtraining + stress + under-eating. Yours might be different. But the fundamental solutions (sleep, food, stress management) help almost everyone.
The Full Cortisol Handbook
We've been working on a more comprehensive guide that goes deeper into cortisol, how to test it, how to optimize it, and what doesn't work. Coming soon.
Ajay's Note
Watching Tessa go through this taught me a lot. The fitness industry wants you to believe more is better—more training, more restriction, more optimization. But for most people dealing with fatigue, anxiety, and plateau, the answer is the opposite: more sleep, more food, less training, less stress. It's humbling that the fix for feeling broken is so simple, but that's how the human body actually works.