STTM said "If I don't have 100g of carbs post workout, I will die", which leads to an obvious inference of insulin use requiring the carbs, or potentially going hypo risking a fatal outcome.
anyone else obviously is not going to die of they don't have carbs post workout. As a matter of fact, I have extensive research and experience in the area of intermittent fasting, and I am fully aware at just how effective it can be when done properly. Carbs are very important, but I completely disagree about their timing around training. I did fasted training for 3 years, and did not have my post workout meal until about 4 hours after my workout (BCAAs only up until that point), and I had some of the best gains in muscle mass and losses of fat ever experienced during that time. I would consume 60% of my total daily carbs and protein in that fast breaking meal which initiated a huge anabolic response to the nutrients enabling them to be used very efficiently from having the huge spike in insulin levels during that time. It is my belief (also backed up by many studies) that once glycogen stores are depleted, they do not need replenished immediately. As long as you get the appropriate amounts of carbs in by the end of the day, it doesn't matter when you get them