Our various secretions - from tears to earwax - can tell us more about our bodies than you might think!

You may have thought that crocodile tears were just a figure of speech, but it turns out they're real, and may help those of us with dry eyes.

New Year's resolutions often include a goal to exercise more, so we've put together a few of our favorite fitness-themed episodes into one place for our lovely viewers!

We're closer than ever to growing life in artificial wombs, and we've learned a bit more about how glucose and protein affect exercise endurance.

We all know that we need things like water and oxygen to live, but what happens when you get too much of a good thing?

Dihydrogen monoxide (better know as water) is the key to nearly everything. It falls from the sky, makes up 60% of our bodies, and just about every chemical process related to life takes place with it or in it. Without it, none...

Some athletes swear by pickle juice and bananas, but how do they help? Quick Questions explains!

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Beer has water, electrolytes, and simple carbs, just like your typical sports drink, but is it good for you to drink alcohol right after wo<br/>rking out?

Ever wondered what happens to your body if you don't get enough water? Our bodies are mostly water by weight, so in today's episode of SciShow Hank explains what happens to your body as it starts to shut down when you go without that...

Howcast - Learn the risks of energy and vitamin drinks in this Howcast video

Howcast - Learn if coconut water is good for you from nutrition expert Alex Jamieson in this Howcast video.

Howcast - Learn how to treat someone who has food poisoning in this first aid video from Howcast with Nurse Mary.

Howcast - Learn about the pros and cons of sports drinks to build muscle from DreamBodies' Tony DiCostanzo in this Howcast bodybuilding diet video.

Howcast - Learn how to treat a stomach flu or stomach virus from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems.

Howcast - Don't let heat and humidity throw your running schedule off track. With a few precautions, you can safely stay on your feet in high temperatures.

Muscle trembling during weightlifting or intense exercise is a result of muscle fatigue. Muscle fatigue, in simple words, refers to the state when our muscles get tired. To understand this phenomenon, it is better to first understand...

While it is certainly enticing when a company or individual claims that they have developed technology that can power cars purely on the water when it comes to science, there is a fundamental restriction to this very idea. Simply put,...

When you wake up, it takes some time to get the electrolytes flowing through the muscles in your hands again. That’s why you may not be able to make a fist right after waking up. This effect is more pronounced if you don’t wake up...

This video discusses the definition and causes of heat waves, as well as the increase in their frequency due to global warming. It provides tips on how to stay cool during a heat wave, emphasizing the importance of staying hydrated and...

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In this video, Justin from the Institute of Human Anatomy discusses how the body regulates hydration levels, as well as what happens when the body becomes dehydrated.

In this video, Jonathan from the Institute of Human Anatomy discusses the significance of the kidneys. You will likely be surprised by the many functions these most valuable organs perform, such as balancing water and electrolytes,...

In this video, Jonathan from the Institute of Human Anatomy discusses the anatomy of the large intestine, as well as the mechanics of defecation.