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.

The back consists of large, complex muscles that support your trunk and spine. There are many types of back muscles, and they are all essential, helping you walk, bend, twist, and hold your body ...

Learn how different types of exercise alter muscle fibers for strength and endurance.

All living beings, big or small, are formed through the hard work of many different cells. To keep the body ready for any challenge, cells need to be dynamic. Often, this means the same types of ...

Injections deliver liquid medications, fluids, or nutrients directly into a person’s body. Different types of injections include intravenous, intramuscular, subcutaneous, intraosseous, and intradermal ...

Katrina Carter, DPT, FNS, is a licensed travel physical therapist. She specializes in orthopedics and has a passion for providing education on nutrition for healing and overall health and wellness.

A research team led by Prof. CHEN Yan and Prof. YANG Lifeng from the Shanghai Institute of Nutrition and Health of the Chinese Academy of Sciences has revealed a physiological function of ...

The type of seizure you have depends on what area and how much of the brain's electrical activity is affected.