The many benefits of yoga, a 5,000-year-old discipline, are finally getting support from modern science.
If you've ever taken a vinyasa class or spent time meditating, you may be familiar with the even-keeled buzz often referred to in the yoga world as "yoga bliss" or "yoga high." As it turns out, several recent studies support that this feeling of mind-body nirvana is not just a fleeting sentiment, but rather an indication of some very real physical responses that could lead to better health, reduced stress and increased productivity.
Yoga gets on your nerves, in the best way
The human body is an incredible, interconnected web of life, but one key player doesn't get nearly enough credit. Many people are entirely unaware of the vagus nerve, which extends from the base of the brain and branches out through the neck, chest and abdomen. It is essentially the command center for regulating the homeostasis of many vital organ systems including the heart, lungs and digestive tract. Researchers from Boston University School of Medicine presented evidence that yoga helps to regulate vagal tone, or the homeostasis of these systems, by stimulating and increasing the activity of stress-blocking neurotransmitters.
Mindfulness meditation can literally change your brain
A team of Harvard researchers compared MRIs of meditators to non-meditators before and after an eight-week course in mindfulness-based stress reduction, where participants practiced meditation on average for 27 minutes a day. Meditators showed a significant increase in gray matter in the hippocampus, which is associated with learning and memory, and a decrease in gray matter in the amygdala, which is associated with anxiety and stress. The non-meditating control group showed none of these changes in brain structure.
A few deep breaths really do go a long way.
A study published in 2013 by the National Center for Biotechnology Information found that participants showed a significant reduction in blood pressure following 10 minutes of alternate nostril breathing and 10 minutes of breath awareness compared to a control group. The study concluded that alternate nostril breathing is associated with improved focus and attention while keeping anxiety levels low. This is significant because tasks requiring focus and attention are usually associated with stimulating the nervous system -- a response that can be dangerous for those with conditions such as hypertension and high stress levels.
Not all exercise is created equal
Think yoga is just one way to get the benefits of any aerobic workout? Think again. A University of Illinois study concluded that 20 minutes of Hatha yoga improved participants' ability to maintain focus and take in, retain and use new information significantly more so than after 20 minutes of moderate to vigorous aerobic activity. In fact, participants showed no significant improvements on working memory and inhibitory control scores after activities like jogging, while reaction times and accuracy on cognitive tasks following yoga increased.