I drink at least a liter of water to help keep the feeling of hunger away. I learned that if I keep the meal small preceding the fast I don't struggle during th

I drink at least a liter of water to help keep the feeling of hunger away. I learned that if I keep the meal small preceding the fast I don't struggle during the fasting day. Sometimes even if I follow all these rules I may feel hunger regardless after hour 21. I'm not the best person to ask about energy levels because I take a medication that depletes my energy so I'm drinking caffeine a lot to stay energized. I can honestly say the last hour is the real challenge after doing it this long.