Feeling calmer does not identify a single chemical cause
Yoga can leave a person feeling calmer or more positive, but that experience does not reveal which biological pathway produced it. The endocannabinoid system is one candidate studied in exercise research. It is a signalling system already present in the body, whether or not a person uses cannabis. Its name reflects the history of cannabinoid research, not a requirement for the plant.
The body’s own cannabinoid signals
Anandamide and 2-arachidonoylglycerol, usually shortened to 2-AG, are endocannabinoids. They interact with cannabinoid receptors. Cells produce these lipid signals as needed, and enzymes break them down, helping keep their action tightly regulated.
THC is a plant-derived compound that can activate cannabinoid receptors. Its effects therefore overlap with an existing signalling network, but taking THC is not equivalent to the body releasing its own short-lived signals during ordinary activity. Brain areas involved in memory, coordination, pleasure and time perception can be affected by cannabis.
What a 2026 exercise experiment found
A study of 88 adults compared 30-minute exercise sessions. Only moderate aerobic exercise increased anandamide; yoga improved positive mood without that increase. Anxiety fell across conditions. Neither 2-AG nor BDNF changed significantly. The result separates a reported mood benefit from a measured endocannabinoid increase.
Why a blood sample is only part of the picture
A circulating concentration is a measurement in blood, not a direct recording of every receptor in the brain. Likewise, an immediate change after one session differs from adaptation after weeks of practice. These are different biological questions. A correlation between a molecule and mood also does not, by itself, show that the molecule caused the entire mood change.
Yoga combines movement, attention and breathing. Its effects can involve more than one pathway at the same time. That makes the phrase ‘activates the endocannabinoid system’ much less informative than a description of the measured outcome.
What yoga’s benefits mean in practice
NCCIH’s evidence summaries describe potential benefits for stress, sleep, balance and some pain conditions, with results varying by condition and study. A comfortable class can therefore have value without a claim that it produces a cannabis-like state.
The exercise experiment did not test adding cannabis to yoga. Its findings concern movement and the body’s own signalling. They support a clear distinction: an improved subjective experience, a change in a blood marker and better physical performance are three separate outcomes.
Sources & further reading
General information, not individual legal or medical advice.