You are fasting, not feasting.
Fasting in Ramadan is done to induce a sense of submission and fear of God, and has many other objectives as well- such as learning to empathize with those who are unfortunate and lack food, so that we can be more grateful and value what we have.
When it comes to such abstentions, your net intake of food must be reduced. Fasting does not mean you abstain from food for the required hours and then compensate for that abstention in the hours you’re not fasting.
The issue with a majority of us at this point is, once we’re done fasting- we feast. Our Iftaar and Suhoor food amounts are like the plates we make when we go to our cousins weddings.
Interestingly, humans can actually eat an amount of food before feeling full which is higher than the amount they can comfortably digest.
Hence, intake of regular daily calories in the short span of the time one does not fast in is highly discouraged as it can lead to digestive problems like indigestion etc.
Recommended Link For Detailed Advice on Food Habits: Healthy Eating During Ramadan
In conclusion, make sure you eat in right amounts, eat slowly and do not eat too much at once, make sure your food is healthy as well and does not cause much of a threat to your digestive system. Also, have adequate amount of water to keep you hydrated as well!
Fasting is not to shift your eating hours to another part of the day but to reduce food intake as a whole.
Doing this has numerous other health benefits as well. Since there is less of digestion to take place, the body has more time to detoxify and improve the physiological functioning as well.
Fasting properly also reduces weight and prevents obesity.
Coming to the great blessing when one fasts properly, Fasting prevents cancer, how?
According to discoveries by the Nobel prize laureate- Professor Yoshinori Ohsumi, in the field of prevention of cancer was that staying hungry reduces risk of cancer. But how?
When a person stays hungry, obviously the nutrients in the body deplete. This further leads the body to demand nutrients, and it does so by eating up the old and unneeded parts of the internal body (Autophagy)
Yoshinori further advised to stay hungry in order to reduce the amount of old and unneeded machinery of their bodies, in turn reducing the chance of cancer. However, he was questioned on how many days should a person stay hungry in a year for Autophagy to work effectively.
Yoshinori answered with ’20-25 days’.