Inside your bones, red marrow helps make red blood cells, platelets, and white blood cells, including plasma cells. There are about 5.7 pounds of it inside the bones of an average adult. Yellow ...

The most common sign of miscarriage is vaginal bleeding. But what does it look like? Get answers to the most commonly asked questions about miscarriage bleeding.

Blood is redistributed from your body’s core to its periphery in order to release heat through your skin. Capillaries at the surface of the skin fill with blood, which is why people often look ...

We know it can get your heart pumping and leave you out of breath, but what does cardio do to your body? Before plunging into the details, it’s worth laying out exactly what counts as cardio ...

Bleeding in pregnancy could be a sign of miscarriage. Learn what miscarriage bleeding looks like, plus other signs of pregnancy loss, including how long it lasts and how it differs from menstruation.

Spotting refers to any light bleeding outside of your typical menstrual period. It often looks like — as the name suggests — small spots of pink or red on your underwear, toilet paper, or cloth.

High blood pressure Body swelling, including puffiness around your eyes; What does blood in urine look like? Sometimes you can't tell anything is wrong by looking.