A Munchkin is the sort of person who, faced with a role-playing game, reads through the rulebooks over and over until he finds a way to combine three innocuous-seeming magical items into a cycle of infinite wish spells. Or who, in real life, composes a surprisingly effective diet out of drinking a quarter-cup of extra-light olive oil at least one hour before and after tasting anything else. Or combines liquid nitrogen and antifreeze and life-insurance policies into a ridiculously cheap method of defeating the invincible specter of unavoidable Death. Or figures out how to build the real-life version of the cycle of infinite wish spells.
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.
It all depends on the context. If I just finished a massive weight lifting workout after a day of eating extremely low-carb, I'm going to need something to replace my glycogen stores. Even with that said, dark chocolate is still a high-fat food. According to the label the brand I'm eating right now contains 86% of my "recommended daily intake" of fat & only 6% of carbohydrates. Further, it provides one of the best fats for you -- the saturated fat Stearic acid.
Starch can be converted to glycogen just fine, it just takes longer.
The only good reason I see to eat significant amounts of sugar is if I need an energy boost right now, ideally during exercise, though preemptive bread-eating reduces even that need. Active exercise also reduces the negative effects of eating sugar.