carbohydrate loading

noun
  1. the practice of eating high amounts of carbohydrates, sometimes after a period of low carbohydrate intake, for several days immediately before competing in an athletic event, especially a marathon, in order to store glycogen in the body, thereby providing greater reserves of energy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

carbohydrate loading in Medicine

carbohydrate loading

n.
  1. A dietary practice that increases carbohydrate reserves in muscle tissue through the consumption of extra quantities of high-starch foods and is often followed by some endurance athletes prior to competition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.