During pregnancy, the muscles of the uterus are relatively inactive. A switch to an activated state capable of strong contractions is therefore essential prior to the onset of labor. Kathleen Martin ...

You've made it through nine(ish) months of pregnancy, and now the big day has arrived: Your baby's birthday! You might be eager to take on the stages of labor, or you may be nervous about what's to ...

Giant migrating contractions (GMCs) are powerful waves of colonic movement that propel intestinal contents toward the anus and are essential for defecation. Yet despite their physiological importance, ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

When you think about labour pain, you might only think about the strong contractions in your womb. But for many expecting mothers, the most intense discomfort is felt in the lower back, a deep aching ...