When in the hospital, glucose levels are checked several times daily and the patient is monitored for signs of symptomatic ketosis (which can be treated with a small quantity of orange juice). Lack of energy and lethargy are common, but disappear within two weeks. The parents attend classes over the first three full days, which cover nutrition, managing the diet, preparing meals, avoiding sugar, and handling illness. The level of parental education and commitment required is higher than with medication.
So that's what I did. I crossed off the majority of my work to-dos in the morning while drinking a ton—water, black coffee, bulletproof coffee, green tea. At around 11 AM my stomach siren would go off, but knowing that noon yoga or a hike wasn't far off pushed me through. By the time I got home from yoga (1:30ish), the hunger had mainlined so I could eat my first meal, usually Greek yogurt with berries and slivered almonds, without ravenously wolfing it down. The rest of the day was easy: I usually ate dinner and maybe a sweet snack and that's it. Within a couple of days this became my new normal, the hangry switch turned off, and Mark was right: All that mental energy previously devoted to food—food prep, food planning, food consuming, food cleanup—seemed to flow elsewhere for improved focus.
#6) Zero-calorie beverages are okay. I drink green tea in the morning for my caffeine kick while writing. If you want to drink water, black coffee, or tea during your fasted period, that’s okay. Remember, don’t overthink it – keep things simple! Dr. Rhonda Patrick over at FoundMyFitness believes that a fast should stop at the first consumption of anything other than water, so experiment yourself and see how your body responds.