Contraction in a medical context refers to the tightening and shortening of muscles, often associated with the process of childbirth. During labor, the uterus contracts to help push the baby through the birth canal. These contractions can vary in intensity and frequency, playing a crucial role in the delivery process. In addition to childbirth, contractions can occur in other muscles throughout the body. For example, when you exercise, your skeletal muscles contract to enable movement. Understanding how contractions work is essential for recognizing normal bodily functions and identifying potential medical issues, such as muscle spasms or cramps.