“Several practices that help calm the mind can also lower blood pressure. All are types of meditation, which use different methods to reach a state sometimes described as ‘thoughtful awareness’ or ‘restful alertness.’
But while researchers are now beginning to better understand how these mental changes affect the cardiovascular system, studying meditation has proved somewhat challenging. For one thing, some studies don’t include a good control treatment to compare with meditation. Second, the people most likely to volunteer for a meditation study are often already sold on meditation’s benefits and so are more likely to report positive effects.”
View the whole story here: https://www.health.harvard.edu/heart-health/meditation-and-a-relaxation-technique-to-lower-blood-pressure