At 92, Emma Maria Mazzenga defies age, breaking track records and captivating scientists. Her muscles resemble those of a much younger person, boasting endurance fibers of a 20 - year - old.

Often, people experience spastic movement disorders.That can mean This means that the muscles suddenly cramp or stiffen, they are under severe tension and hurt. Which muscles are affected and how ...

Ms. Barclay is the climate editor at Times Opinion. I was lying on my side at physical therapy, halfway through a set of leg raises to strengthen a butt muscle gone soft, when a therapist attending to ...

Evolution has left humans with many vestigial traits—remnants of once-useful biological features that serve little or no modern purpose. One such example is the muscles around our ears, which in many ...