Laughing could help to improve blood vessel function!
Laughter relaxes blood vessels and increases blood flow -- the exact opposite of what your blood vessels do when you are stressed. Relaxed blood vessels decreases strain on the heart.
The best way to relax blood vessels is by watching a funny movie. If funny movies aren't your style, spend time with the people who tickle your funny bone.
Blood vessels are lined with a layer of cells called endothelium; they regulate blood flow by helping blood vessels expand and contract. In a small study, healthy men and women watched either a funny movie or an intense, violent one while researchers measured blood flow through an artery in their upper arm.
