Trim Fit Keto What else happens when we separate muscle glycogen? We lose water weight! Our muscles store around 3 grams of water for each gram of glycogen, which means we can lose a considerable amount of weight immediately when we tap into glycogen stores for fuel. That is the reason somebody who gets thinner in "only multi week!" from a low-carb plan is likely losing water weight, not really genuine weight that stays off after some time.