Category Archives: Carbohydrates

When Does Timing Matter, and for What Macronutrients?

The Times Timing Matters

When does timing matter? Ten years ago, nutrient timing was huge; entire nutrition philosophies arose from the idea that there were “windows” when certain nutrients were more or less important. Today, accumulating evidence suggests this isn’t true—but timing as a concept isn’t quite dead. There are times and situations when timing matters. More specifically, there […]

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An In-Depth Look at Energy Metabolism: Part III

An In-Depth Look at Energy Metabolism: Part III

This week we’re finishing up our in-depth look at energy metabolism. In the first segment of this series, we looked closely at the biochemistry of energy metabolism and focused specifically on the equations of the phosphagen system, glycolytic system, and aerobic carbohydrate and fat metabolism. In the second segment, we looked at what does and […]

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The pros and cons of fructose

Fructose

Fructose may be the single most well-known—and most despised—food sugar. Since it entered our public spotlight, numerous wellness gurus and associated types have cast aspersions on its safety and linked it to any number of disease states. So much has fructose been derided that even among those who don’t vilify sugar, it is often mistrusted. Given a choice […]

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Why you need more oxygen to burn fat than carbohydrates.

Why You Need More Oxygen to Burn Fat than Carbohydrates (and How This Affects Your Climbing)

I’ve written before about how carbohydrates are more oxygen-efficient than fat, which is a boon for climbing of all types; what I haven’t really addressed is why. Far from being a dry, biochemical fact of interest only to physiology enthusiasts, knowing exactly how carbohydrates derive their advantage can inform everyone about their diets, as well as […]

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