Research
Hormonal
High aerobic fitness blunts the physiological stress response (cortisol, heart rate) to both physical and psychosocial stressors compared to low fitness levels.
Improve your aerobic fitness to reduce your physiological stress response to daily challenges. Training leads to lower cortisol and heart rate responses to stress, indicating better stress tolerance.
GoodSupportsHIGH confidence
For example, Rimelle et al. [123] documented significantly lower cortisol and heart rate responses to psychosocial stress (Trier social stress test) in trained men compared with untrained men.
Why this rating
Supported by multiple studies cited in the review, including specific examples of trained vs. untrained comparisons.
Source
Biological mechanisms underlying the role of physical fitness in health and resilience
Marni N. Silverman et al. · Interface Focus · 2014
DOI 10.1098/rsfs.2014.0040
narrative_reviewCited 400×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Regular physical fitness and exercise confer resilience by blunting and optimizing neuroendocrine stress responses (HPA axis and sympathetic nervous system), reducing inflammatory markers, and enhancing neuroplasticity.Good
- Regular exercise promotes an anti-inflammatory state by reducing visceral adipose tissue and releasing anti-inflammatory myokines (e.g., IL-6 from skeletal muscle).Good
- Regular exercise enhances neuroplasticity and growth factor expression (e.g., BDNF), which improves cognitive function, mood, and protects against stress-related brain changes.Good
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →