With its emphasis on breathing practices and meditation—both of which help calm and centre the mind— it’s hardly surprising that yoga also brings mental benefits, such as reduced anxiety and depression. But what may be more surprising is that it actually makes your brain work better.
A sharper brain
When you lift weights, your muscles get stronger and bigger. When you do yoga, your brain cells develop new connections, and changes occur in brain structure as well as function, resulting in improved cognitive skills, such as learning and memory. Yoga strengthens parts of the brain that play a key role in memory, attention, awareness, thought, and language. Think of it as weightlifting for the brain.
Recent medical studies using MRI scans and other brain imaging technology have shown that people who regularly did yoga had a thicker cerebral cortex (the area of the brain responsible for information processing) and hippocampus (the area of the brain involved in learning and memory) compared with nonpractitioners. These areas of the brain typically shrink as you age, but the older yoga practitioners showed less shrinkage than those who did no yoga. This suggests that yoga may counteract age-related declines in memory and other cognitive skills.
Research also shows that yoga and meditation may improve executive functions, such as reasoning, decision making, memory, learning, reaction time, and accuracy on tests of mental acuity.
Improved mood
All exercise can boost your mood by lowering levels of stress hormones, increasing the production of feel-good chemicals known as endorphins, and bringing more oxygenated blood to your brain. But yoga may have additional benefits. It can affect mood by elevating levels of a brain chemical called gamma-aminobutyric acid (GABA), which is associated with better mood and decreased anxiety.
Meditation also reduces activity in the limbic system—the part of the brain responsible for emotions. As your emotional reactivity diminishes, you are able to cope better with stressful situations.
Drugs and talk therapy have traditionally been the go-to remedies for depression and anxiety. But complementary approaches, such as yoga, also helps, and yoga stacks up well when compared with other complementary therapies.
A number of small studies have also found that yoga can help with post-traumatic stress disorder (PTSD). It is not used by itself, but as an add-on treatment to help reduce unpleasant memories and emotional arousal and to produce calmer, steadier breathing. Deep, slow breathing is, of course, associated with calmer states because it helps activate the parasympathetic nervous system.
Adapted from an article in Harvard Health.
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