NOTE WELL: CONSULT YOUR PHYSICIAN BEFORE FASTING
and THIS IS NOT MEANT TO BE MEDICAL ADVICE.
Yes, fasting is something I’ve done many times and I’m just now planning another fasting retreat. I do water-only fasting, but I do continue to take my Synthroid medication which is for low thyroid; you take it on empty stomach first thing in morning anyway.
I go to a Franciscan retreat house, they have about 10 rustic cabins in the woods on 150 acres, it’s a beautiful property with many statues and shrines and ponds. I bring my Chihuahua
The first two days of fasting are pretty bad, and I just lie around pretty much, reading, staying warm, going to Mass (oh yes, I do receive the Body of Christ daily at Holy Communion), and drinking lots of water. I must go away to fast because it’s so much easier when I’m alone and in the peaceful setting away from the phone and the food.
On the third to fourth day, all kinds of great things start happening. You DO get mental clarity, your tiredness is gone, you care nothing about food! TIME also doesn’t mean anything. Your day will fly by. Peaceful thoughts, praying is gratifying and you don’t get tired of praying. This is the time to journal or do whatever art you may be into, for the glory of God. It’s super easy to think about holy things, say the Rosary with complete focus. Be prepared for unexpected weeping, while walking, I came upon a statue of Our Lady and it was so incredibly beautiful and I just cried because I could feel her complete love for us.
It’s also an excellent time to see a spiritual director and get some guidance on any of your issues. (We all have issues.) I find fasting a great time to reset my inner clock physically, too, because your body will naturally adjust to the higher level of functioning at which everything’s supposed to be functioning.
Just because they’re available, I get KETONE strips from the drugstore that measure how far into “ketosis” I am, you’ll have to google that, but by the third to fourth day, the strips start telling me that my body is burning ketones from my fat reserves, not carbs or muscle. I’ve read the brain works much better on ketones, and there is an actual switch over-- that may be why the mental clarity occurs.
I fast for the spiritual benefits first, (communion with God), then the physical benefits. I usually fast for 5 days minimum up to 8 days and then I slowly get back to the real world and start with bland foods, juices etc. PLEASE read how to properly break a fast, bring a fasting book with you if you’re not experienced. DO NOT drive home before breaking the fast.
It’s very much worth it. Good luck and God bless you.