low carb days and round/full muscles?

lets say i have 3 days with 100g carbs then a high carb day around 300... will this affect my muscle roundness etc? trying to stay shredded while not losing muscle mass hehe :) perhaps i should go like 75g, 100, 150 and then 300?

appreciate all help

from Bodybuilding.com Forums - Nutrition https://ift.tt/2BFMR8P