The Human Body 3

Migraines are a type of headache that can cause severe throbbing pain, usually on one side of the head. Affecting approximately 12% of the population, migraines are more common in women than men. They are considered a neurological condition, with some scientists believing they are genetically linked.

The hamstring muscles are located in the thigh, at the back of the leg. These muscles play a crucial role in activities like walking, running, and jumping. The word "hamstring" is derived from the Old English "hamm" or "hom", meaning the hollow or bend behind the knee, and "string", referring to a ligament or tendon.

Cirrhosis is a condition in which the liver is scarred and permanently damaged. The scarring is a result of long-term inflammation.

FUN FACT

The scientific term for not feeling your face—or facial numbness—is "facial hypoesthesia".

Canadian singer-songwriter The Weeknd achieved commercial success when he released the 2015 song "Can't Feel My Face", which became a No. 1 hit in Canada and the U.S. 

Tooth enamel is not only the hardest substance in the human body, but it also surpasses steel in terms of its mineral content hardness!