If you're constantly stressed and want to manage your stress level, try this method. It has helped me in the last 6 months and I've even seen a positive impact on other areas of my life.
Starting from the top of your head, tap or pat your head, neck, face, arms, back, and body down to the feet. I like to pat in a 1-2 motion (left tap, right tap in a rhythm).
Do this once a day and some of the tensing in your muscles and pressures can gradually ease over time. This method helps to alleviate pressure and is also a great method when you're upset or angry. My anger usually subsides after tapping/patting for just two minutes. Give it a try!