Adrenaline increases the "alertness" of the nervous system, meaning it's ready to trigger muscle contraction. It also increases the amount of blood flow and changes the tension of the muscles, which, ...

Professor Susan Wray, who heads the UK's top rated Department of Physiology, and Dr. Ted Burdyga, are studying muscles in the wall of the ureter, which connects the kidney to the bladder, to ...

Eat electrolyte-rich foods like bananas and avocados to help muscles contract and relax. Stay hydrated before, during and after workouts to keep muscles healthy and cramp-free. Stretch often and avoid ...