Additionally, using preseason to strengthen muscles surrounding joints helps reduce the risk of injury. (blog.bridgeathletic.com)
Your core muscles surround and support your spine and are responsible for standing upright and rotation of your trunk at the waist. (ahealthblog.com)
These four chemicals cause the smooth muscle within the respiratory and digestive tract to contract and smooth muscle surrounding the blood vessels to relax. (2ndchance.info)