The first 24h you will feel a slight (albeit persistent) sense of hunger but physically and mentally you will be fine (almost 90%, I would say). I recommend you to drink abundant water (+ an espresso when you feel a bit sleepy).
The second day (the Saturday) the sense of hunger subsidizes a little but you will feel increasely tired and it will take you a bit longer to do simple tasks and also focusing on certain things.
U get all shaky and u will fill liek ur gonna puke.
Your body will be upset. Now have some fries. 🍟
You will have not eaten for 2 days
You get hungry