Your Brain on Yoga: Yoga & Stressmanagement
Ever wondered what actually happens in your body when yoga makes you “feel calm”?
I read this new study of 2024, where researchers scanned the body’s electrical signals and observed biosignals while people were practicing yoga. They measured brain waves, heart rhythms, muscle tension, skin conductivity and did brain scans before, during and after yoga practice.
Your brain waves literally shift
EEG studies show that certain yoga practices can modulate brainwave patterns, including increases in alpha and theta waves — both associated with relaxation and reduced stress. When you're stressed, alpha activity drops. When you're calm, it rises. One study found that just 20 minutes of OM chanting daily for a month produced measurable increases in alpha power.
Even more intriguing: Bhramari Pranayama (the "humming bee" breath) has been shown to generate high-frequency gamma waves, producing a nonepileptic hypersynchrony linked to a subjective feeling of "bliss" in practitioners.
Improved Stressmanagement & Regulation
Heart rate variability (HRV) — the variation in time between heartbeats — is a highly responsive indicator of psychological stress. During stress, the sympathetic nervous system dominates, raising heart rate. Yoga, particularly slow movement and pranayama, shifts activity toward the parasympathetic nervous system, producing measurable reductions in heart rate and improvements in HRV. Even adolescents who practiced Bhramari Pranayama for six months showed a beneficial shift in cardiac regulation.
The amygdala (your brains “fear-center”) quiets down
fMRI studies have shown that regular yoga practice, particularly mindfulness-based approaches, can decrease amygdala activation in response to stressful stimuli, while increasing activity in the prefrontal cortex, which governs emotional regulation and cognitive control. In short: less reactive fear response, more measured thinking.
Your muscles let go
EMG recordings show that yoga leads to decreased muscle tension in stressed muscle groups like the trapezius, with evidence that yoga practitioners use fewer muscle synergies overall, suggesting a genuine reduction in physical control complexity.
So exciting seeing modern science “catch up” on the ancient wisdom of yoga :-)
Take a look at the article here: Khajuria et al., "Reducing Stress with Yoga: A Systematic Review Based on Multimodal Biosignals," International Journal of Yoga, 2024
https://pmc.ncbi.nlm.nih.gov/articles/PMC10919405/?fbclid=PAdGRleAQYpGZleHRuA2FlbQIxMQBzcnRjBmFwcF9pZA8xMjQwMjQ1NzQyODc0MTQAAaf28RzSCm9Fsemu9PEKz6ZpjV6DaNV70bfjJx8iNkXSeXX1paWr1ZKyBYhhMQ_aem_8yCwtAW7RnByihDkN4uDkg
