What is energy?. Energy is the capacity to do work Forms of energy: mechanical, electrical, chemical, solar, thermic, and .. Two sources: food/stored on body Energy can be transformed from one form to another: Flowing water electricity light Glucose ATP muscle contraction.
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minimum amount of energy that an awake,
resting body needs to maintain itself; usually measured under laboratory conditions
similar to BMR, but easier to measure,
and usually within 10% of the BMR;
Plus…individual variation +/- 20%
Total energy expenditure
# hrs at very light activity level RMR/hr 1.5
# hrs at resting metabolism RMR/hr 1.0
glucose is the major energy source in the body; it is transported by blood and can be stored as glygogen in the liver and muscle; can also be converted to fat and stored in adipose tissue