Definition of infirmary for English Language Learners. : a place where sick people stay and are cared for in a school, prison, summer camp, etc.
Torgan says delayed onset muscle soreness also has a repeated bouts effect. If someone does an activity, they will be inoculated for a few weeks to a few months -- the next time they do the activity, there will be less muscle tissue damage, less soreness, and a faster strength recovery..
Photo Credit Maridav/iStock/Getty Images. Muscle soreness is a general term that describes pain and discomfort in your muscle tissue. When you exercise, this type of soreness can develop a day or two later in the muscles you used during physical activity.hile researchers once believed that post-exercise muscle soreness was caused by the buildup of a substance called lactic acid, they now believe that it results from physical damage to your muscle tissues.