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Dangerous activities, such as skydiving, can cause a surge of adrenaline.

What is Adrenaline?

Adrenaline is a hormone produced in high-stress situations. An extremely powerful hormone, too much adrenaline can cause serious...

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Coffee beans contain a significant amount of caffeine.

What is Caffeine?

Caffeine is a plant-based alkaloid that stimulates the central nervous system. Technically not addictive, caffeine can cause...

Vitamin D supplements.

What is Vitamin D?

Vitamin D is a fat-soluble vitamin that's essential for human health. It can be both consumed from food and created by sitting in...

A BMI over 35 is considered obese.

What is BMI?

BMI stands for body mass index, an approximation of body fat based on height and weight. Many factors can influence BMI, such as...

The best stability balls are made from a durable rubber material and come in a variety of colors.

What is a Stability Ball?

A stability ball is a piece of exercise equipment that consists of a very large rubber ball, which is used to help increase the...

Electric treadmills rely on an electric-motor powered belt.

What is a Treadmill?

A treadmill is an indoor exercise machine that allows a person to walk, jog, or run in place on top of a moving belt that runs...