Since the glycogen stores in the liver and muscles are depleted, carbohydrates go straight to refilling them, instead of being added to the body's fat stores, this occurs when there's excess. Hence on refeed day if one does not over eat and maintain a medium portion of carbs this will prevent going too flat if the goal is to maintain muscle mass. I never notice fat gain when I refeed, infact the next morning I feel solid and muscles feel full yet the skin is tight, a refeed boosts metabolism as well which slows right down with a deficit of calories and energy sources for 5 days.
What people fail to understand is that we're all different, in a metabolic way as well as a psychological way. A blanket fits all type of dieting is not the answer
BTW my protocol is 5/6 days very low and one to two days carb refeed. At the beginning I only have one carb refeed.
Then again my goal is usually getting solid abs for a holiday, not a 4% bf....cos going from arounf 7/8% to 4% is a totally different game.
yes, when youre depleted, you can easy easy even drink pure sugar and will not get fat.
its impossible,tthats the one day where one can seemingly eat much more calories, but its realy just a tank refilling,metaphoricaly speaking.
the fatloss will come to a halt for as long the bloodsugar is elevated and for as long theres "too" much serum insulin.
as soon glucagon takes over again, fatloss restarts, no mater how full the glycogen stores are,they never ever get entirely depleted anyway, or we would be plain dead
the bad thing is the bloodsugar crash will be terrible after sugar only.
the other bad thing is, carb only up is no problem but when you add fat to those refill meals, that fat will be stored, a trained can get away with it if hes depleted,bc the body can use a bit for other purpose and can actualy store fat IN the muscle calls.
this is precisely how it works.the more time glucagon dominates over insulin,the more fatloss.
in other words, bit carbs, even with every meal wont stop ppl from getting shredded if the insulin in bllod doesnt dominate all the time.
brings us back to the dont eat when not hungry.
and for the very last bits of fats, measures will have to be extreme or the results will be very slow.