Twin science and human physiology on dopamine, reward, exercise euphoria, emotion, environmental sensitivity and social influence.
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Brain, Mood & Behavior
All 3 articles
Article 1 of 3·7 min read
Dopamine: How Much Is Determined by Your Genes? What Twin Studies Reveal
Twin PET studies show a genetic contribution to dopamine function — but especially in reward-related brain regions, individual experience still appears to matter.
Runner’s High: Is It Really the Endorphins — Or the Body’s Own Cannabinoid System?
The classic endorphin story is only part of the picture. Human experiments now make endocannabinoids strong candidates for the euphoria and reduced anxiety some runners feel.
Can Other People’s “Energy” Affect You? What Twin Research Actually Says
If “energy” means feeling calmer, brighter, stressed or drained around certain people, science has several plausible mechanisms: emotional contagion, environmental sensitivity and physiological synchrony.
