Your liver may only be able to store about 400-600 kCals of glycogen, but your skeletal muscle tissue scan store a great deal more. The catch here is that only

Your liver may only be able to store about 400-600 kCals of glycogen, but your skeletal muscle tissue scan store a great deal more. The catch here is that only those muscle tissues can use that glycogen (and are very resistant to using ketones and/or free fatty acids). This is why nutritional ketosis is driven primarily by hepatic glyocgen depletion. Many cyclical ketogenic diets use this hack to replete glycogen in their muscle tissue (in the form of a once per week carb refeed) in order to fuel glycolytic workouts during the week. While it's hard to completely avoid filling your hepatic glycogen stores during the refeed, they can be burned through pretty quickly by the brain in the course of a day or two provided you restrict dietary carbohydrate to < 20g/day. It's also worth noting that glycogen repletion is generally preferential to muscle tissue first, then the liver second.