What happened inside of your body when you were fasting

Here are some interesting facts about how our body reacts during fasting

Ramadan, the Islamic holy month, is also associated with fasting. As part of their religious commitment, a billion Muslims around the world fast from dawn to dusk. Though fasting for Ramadan is motivated by spiritual values, there is quite a negative stigma associated with not eating.

So, what happens to the body when it goes without food?