Definition
Eating more calories than you burn to gain muscle (and fat). Every bulk ever.
Example Usage
I'm in a slight caloric surplus to maximize muscle gains during this mesocycle.
Origin
Thermodynamics applied to nutrition, foundational principle since the 1900s
Fun Fact
A 300-500 calorie surplus is ideal for muscle gain; beyond that just adds unnecessary fat
Source: Nutrition Science and Strength Training
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Feb 23
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