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Dr. Wendy A. Suzuki is a Professor of Neural Science and Psychology in the Center for Neural Science at NYU and the the author of "Healthy Brain, Happy Life." Here, she explains the positive effects of exercising to the brain.

Have you ever wondered what happens to a painkiller, like ibuprofen, after you swallow it? Medicine that slides down your throat can help treat a headache, a sore back, or a throbbing sprained ankle. But how does it get where it needs to go in the first place?

A surgeon uses controls to guide the robot.

Running can bring a lot of health benefits to you, but that's not always the case when you do it for too long. These are 4 terrible things that can happen to your body when you run too much.

There will eventually be a day where prosthetics are no longer just for the disabled. However, it's not just our outside appearance that will change - our genes will also evolve on microscopic levels to aid our survival. For example, an Oxford-led study discovered a group of HIV-infected children in South Africa living healthy lives. It turns out, they have a built-in defense against HIV that prevents the virus from advancing to AIDS.

Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside your body? Enda Butler tracks the surprisingly complex journey of oxygen through your body.

What really drives us to breathe? And how dangerous is it to hyperventilate and hold your breath?

Mother's bodies go through tons of changes before and after giving birth, but so do their brains! What really makes a mom's brain different?

Is vocal fry bad for your voice? Does it hurt your chances of getting a job?

One man's quest to test the human limits of gravity on the human body.

How much blood can a human lose without dying, and how does the body replenish that blood once it's gone?

We've heard it. We get it. We know! Drink more water! But it's not just overplayed advice from fitness magazines and your mother. When we get dehydrated our bodies send out clear warning signs that we need to check our fluid levels. If that happens, it's important to do everything to get your hydration level back on track. Here are some of the symptoms associated with not drinking enough water...

Everyone suffers a little in the winter, be it human or animal, but how does cold climate actually change your body?

Why working out is great for health, but not for weight loss, explained in five minutes.

Lissa Rankin, MD is an OB/GYN physician, author, keynote speaker, consultant to health care visionaries, professional artist, and founder of the women's health and wellness community OwningPink.com. Discouraged by the broken, patriarchal health care system, she left her medical practice in 2007 only to realize that you can quit your job, but you can't quit your calling. This epiphany launched her on a journey of discovery that led her to become a leader in the field of mind/body medicine, which she blogs about at OwningPink.com and is writing about in her third book Mind Over Medicine: Scientific Proof You Can Heal Yourself (Hay House, 2013).

Pain helps us survive, and yet some people are born without the ability to feel pain, how?

The average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch - but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to the itch, or is it simply there to annoy us? Emma Bryce digs deep into the skin to find out.