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Tag: Fuel utilization

Explore our comprehensive collection of health articles in this category.

When your body is at rest, it gets most of its energy from stored fat

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3 min read
The human body is constantly at work, even during sleep, using energy for vital functions like breathing, circulation, and cell repair. During these low-energy states, the body predominantly taps into its most efficient and abundant energy reserve: stored fat. This metabolic process is a cornerstone of how our bodies maintain homeostasis and fuel the basal metabolic rate.

Carbohydrates: The Substrate Primarily Used to Fuel Exercise at 70% VO2 Max or Higher

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3 min read
At exercise intensities above 70% of your VO2 max, your body dramatically shifts its fuel preference. During these high-intensity efforts, the primary substrate used to fuel exercise at 70% VO2 max or higher is carbohydrates, primarily from stored muscle glycogen. This metabolic shift ensures rapid energy production to meet the high demands of intense physical activity.

What is the preferred fuel source for resting muscle?

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4 min read
At rest, skeletal muscle accounts for approximately 20% of the body's total metabolic rate, and for this sustained energy demand, the body has a highly efficient fuel preference. By relying on a specific fuel source during inactivity, the body conserves its more limited energy reserves for periods of strenuous exertion.

Do Skeletal Muscles Use Fatty Acids? A Comprehensive Guide

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3 min read
At rest, skeletal muscles derive up to 85% of their energy from fatty acid oxidation. The answer to "do skeletal muscles use fatty acids?" is an unequivocal yes, and understanding this metabolic process is key to unlocking insights into energy usage during exercise.

Nutrition Diet: Understanding What are the phases of starvation?

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4 min read
The human body is remarkably resilient, with some individuals capable of surviving for weeks without food during prolonged fasting. Understanding **what are the phases of starvation** reveals the complex metabolic and physiological changes that occur as the body adapts to severe nutritional deficiency to prolong survival.

Nutrition Diet: What is the respiratory RQ for carbohydrates?

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3 min read
The respiratory quotient (RQ) for pure carbohydrate metabolism is exactly 1.0. This dimensionless number, central to the field of *Nutrition Diet*, provides a precise indicator of the body's primary fuel source at a given time. By measuring the ratio of carbon dioxide produced to oxygen consumed, health professionals can gain deep insights into an individual's metabolic state.