Answer: CARB

AnswerCrossword Clue
CARBPasta compound, briefly
CARBAtkins diet taboo
CARBCertain dieter's concern
CARBAtkins no-no
CARB... up (eat starches before a race)
CARBTake in starches before a race, with "up"
CARBPrepare for a marathon, with "up"
CARBAtkins no-no, briefly
CARBEnergy source, dietetically
CARBAtkins Diet no-no
CARBMacronutrient, to a marathoner
CARBLow-.. diet
CARBPasta or potatoes, to a marathoner
CARBPasta, for example, briefly
CARBNo-no on the Atkins Diet
CARBThing to avoid while on the Atkins diet
CARB..-loading: endurance strategy
CARBPaleo diet no-no
CARBConcern for some losers
CARBPasta or potatoes, to an athlete
carbcarburetor
CARBLow-... diet (4)
CARBEnergy provider, in slang
CARBSpaghetti, e.g
CARBDiet craze: low ...
CARBUnit of concern to some dieters
CARBBit of starch
CARBAir-fuel mixer, for short
CARBAtkins diet no-no
CARBDiet component
CARBLow-... diet
CARBGasoline-air mixer, for short
CARBEngine part, briefly
CARBPrep for a long run, with "up"
CARBPrep for a marathon, with "up"
CARBAtkins diet concern
CARBEngine device, briefly
CARBStarch, for short
CARBLoad (up), as energy food
CARBPasta, e.g., slangily