New research into muscle contraction will give scientists a better understanding of bladder problems and pain during childbirth. Scientists have found that calcium, which allows muscle contraction to ...

Contractions are when the muscles of your uterus tighten and relax to get ready for childbirth. These muscles help push your baby down the birth canal. Once you reach week 37 of your pregnancy, it ...

Pregnancy is a remarkable journey filled with countless changes, both emotional and physical. As the baby grows, so do the mother's body and the experiences that come with it. One common physical ...

Labor contractions are the physical way your uterus tightens to promote delivery of your baby. All body muscles tighten and shorten (contract) when they’re being used. And the uterus is one of the ...

When you hear the word contractions, you likely think about the first stages of labor when the uterus tightens and dilates the cervix. But if you’ve been pregnant, you might know that there are many ...

The connections between the nervous system and muscles develop differently across the kingdom of life. It takes newborn humans roughly a year to develop the proper muscular systems that support the ...

Atrial fibrillation is a heart disorder that causes the upper chambers of the heart to spasm instead of beating regularly. While that sounds dangerous, the lack of a regular heartbeat itself isn't ...