Learn more about a special division from the National Institute of Health called the National Center of Complementary and Integrative Health solely focused on the study of holistic health such as stress and relaxation techniques. Sign up for their newsletter to get the newest info and get tip-sheets like this:
https://nccih.nih.gov/sites/nccam.nih.gov/files/Get_The_Facts_Relaxation_Techniques_02-06-2015.pdf
https://nccih.nih.gov/sites/nccam.nih.gov/files/Get_The_Facts_Relaxation_Techniques_02-06-2015.pdf