High-intensity interval training (HIIT)
Short bursts of intense effort driving dopamine, norepinephrine and endorphins.
Too little may be associated with
Lower cardiovascular fitness and stress tolerance.
Too much may be associated with
Overtraining, injury, burnout.
Informational only — not medical advice.
Body systems
Organs
Hormones
Neurotransmitters
Related
Research (5)
- High intensity interval training for Parkinson's disease: A scoping review of systemic effects and physiological adaptations Sivaramakrishnan et al. (2026)
- High-intensity interval training exercise decreases brain CB1 receptor levels in male and female adult rats Tyler et al. (2025)
- High intensity interval training exercise increases dopamine D2 levels and modulates brain dopamine signaling Tyler et al. (2023)
- Effects of physical exercise on children with attention deficit hyperactivity disorder Chan et al. (2022)
- Long-term high-intensity interval training increases serum neurotrophic factors in elderly overweight and obese Chinese adults Li et al. (2021)
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