Chronic calorie deficit could become a health problem in long run. I did 1 meal per day for about 3 months. Now, I'm doing fruit fast on Monday and Tuesday. 48 hour "dry" fast on Wednesday and Thursday. And I feast on plant-based whole food on the weekend. It's better you alternate between fasting and feasting. Our body need both cycle to be really strong. https://steemit.com/vegan/@watermelonprince/watermelonprince-s-max-health-eating-plan