Foundations
What Is the HPA Axis?
The feedback loop that controls every cortisol release.
Read guide → SleepCortisol and Sleep
The two-way link between cortisol and your sleep.
Read guide → MindCortisol and Anxiety
How chronic stress and anxiety feed each other.
Read guide → MetabolismCortisol and Weight Gain
The stress–insulin–belly fat connection, explained.
Read guide →Cōrta can help
Put the science into practice
Reading about cortisol is step one. Cōrta lets you actually track your rhythm — logging symptoms, syncing HRV and sleep, and showing which habits move your curve.