Fitness

Last year there were only 22 reported cases—but until the disease is completely wiped out, there's a chance of a tragic resurgence

Research shows the danger of too much early training

The results come from a rigorous, $8 million study

While researchers wrestle to define and capture “healing,” its power continues to mend hearts and souls—if not always bodies

A recent study suggests pesticides in produce may interfere with your chances of getting pregnant. Let's explore its findings

Is there an absolute minimum time to run a marathon? Will humans ever break the 2 hour mark? What does it take to set a world record marathon time? 

Researchers program bacteria to record cellular memories

Bruising is a common physical symptom. What causes bruising and how do you know when a bruise is something you should worry about?

With electric self-warming jackets and new insulated fabrics, Team USA hopes to overcome record-setting chills

Cancerous cells and placental ones appear to regulate the immune system in similar ways

Getting sick with a single strain does not necessarily protect you from others

One day without their parents isn’t such a big deal—but some infants rarely get family visits, and that is clearly detrimental to their health