| Primary stress hormone | Cortisol |
| Term for beneficial stress | Eustress (coined by Hans Selye) |
| Nervous system "calm" state | Parasympathetic (rest-and-digest) |
| Allostatic load concept origin | McEwen & Stellar, 1993 (Published in Archives of Internal Medicine) |
| Cognitive appraisal framework | Lazarus & Folkman stress model |
| Resilience quality | Learned and built over time, not fixed (American Psychological Association) |
Why This Vocabulary Matters
Stress research has its own language — and when you encounter terms like allostatic load or vagal tone in an article, it can be easy to skip past them without a clear sense of what they mean. But these concepts are genuinely useful. Understanding them helps you read health information more critically, ask better questions at medical appointments, and make sense of why certain habits — breathing exercises, social connection, adequate sleep — actually work.
This reference covers the core vocabulary that comes up most often in stress science and resilience research. Each definition is written in plain language, with enough context to be actionable. For a fuller picture of how these concepts connect in practice, see our guide to understanding stress from biology to daily management.
This Article Is General Health Information
The definitions provided here are educational and intended to help you understand research and health conversations more clearly. They are not medical advice, and no term or concept on this page should be used to self-diagnose or guide personal treatment decisions. If you have concerns about stress-related symptoms or mental health, please consult a qualified healthcare professional.
The Core Terms, Defined
The glossary below covers twelve terms organized around three overlapping themes: the biological stress response, the spectrum of stress types, and the psychological factors that shape how stress affects you.
A few of these terms — particularly eustress and cognitive appraisal — are especially useful for everyday stress management, because they highlight that stress is not purely a biological event. How you interpret a situation shapes the physiological response your body produces. That is why perception-focused practices like reframing or mindfulness appear regularly in stress research.
To see how these concepts translate into specific daily behaviors, the habits that build long-term stress resilience article walks through the evidence behind routines that support parasympathetic recovery and reduce allostatic load over time.
Quick Reference and Further Reading
| Primary stress hormone | Cortisol |
| Term for beneficial stress | Eustress (coined by Hans Selye) |
| Nervous system "calm" state | Parasympathetic (rest-and-digest) |
| Allostatic load concept origin | McEwen & Stellar, 1993 (Published in Archives of Internal Medicine) |
| Cognitive appraisal framework | Lazarus & Folkman stress model |
| Resilience quality | Learned and built over time, not fixed (American Psychological Association) |
If you are just beginning to think about managing stress more intentionally, the everyday stress management starting point is a practical place to continue. For stress specific to work settings, workplace stress management approaches covers boundary-setting, recovery micro-breaks, and task prioritization. You may also find useful overlap with our plain-language sleep science glossary, since sleep disruption and chronic stress are closely linked.
This article is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions you may have about stress-related symptoms or mental health.