Physiology is the study of how the organism functions within itself to maintain optimal functioning, or homeostasis.

Biology of Running
Running is a complex biological function. Learn about the muscles involved and how your body moves while running.

What are Calories?
There's always a lot of talk about calories, especially when speaking in terms of weight loss. How many calories are too many? Does it matter what type of calories we consume? But, do most people really understand exactly what a calorie is and how calories work?

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