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Because vitamin B12 is essential for converting the food you eat into usable cellular energy, restoring healthy levels can help fight tiredness, sluggishness, and that mid-afternoon crash leaving you feeling more energized and productive throughout your day
This became part of the standard management of pernicious anemia until the 1950s
H., Liu, S
Loading protocols use 250-500 mg daily for 3-5 days
High-intensity exercise shifts fuel utilization toward glycogen, reducing the advantage of the pre-mobilized fatty acids
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