Dear Doctors: I am in my early 50s, and I am experiencing a problem that can cause social embarrassment. When I stand up, I pass small amounts of gas. This can happen immediately as I stand up or as I ...

How did the bodies of animals, including ours, become such fine-tuned movement machines? How vertebrates coordinate the eternal tug-o-war between involuntary reflexes and seamless voluntary movements ...

Some muscles, like our arm muscles, we can choose whether to move or not. Muscles are found all over our body and do some important jobs: They help our body to move. They help to keep our body ...