xayrendie@skeletalsy65065 · Oct 12, 2026

Everything i learned on my first 72h fast — a thread for #edtwt #edrtwt

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Summary

The author completed their first successful 72-hour fast after previously struggling with fasting, documenting their approach including water intake, minimal caffeine, increased sleep, reduced steps, and meal planning systems. They achieved ketosis with improved mental clarity but experienced significant physical distress on day 3, leading them to plan shorter 40-50 hour fasts in the future.

Summarized by ThreadOut AI from the full thread. May miss nuance — read the thread below.

#1
Everything i learned on my first 72h fast — a thread for #edtwt #edrtwt
#2
Background info: I used to be someone who can barely fast to save my life. - prev. record : 58 hours. - on my first ever fast, i threw up (?) after 12ish hours. - i faint easily & frequently. - past 24h my hands usually start shaking, 0 energy & all-powerful existential dread
#3
Why i did it : I was stuck in an EH/binge cycle all September. I gained & felt genuinely in pain from distending my stomach so much. I wanted to give my digestive organs a proper break. I also wanted to kick-start my weight loss again, to get back to my preferred weight (bmi 16)
#4
My rules : - drink water every waking hour. - write down how i feel every waking hour. - i made one 75ml bottle of coffee (with cinnamon & 0kcal sweetener) to spread out accross the 3 days. - 13k steps per day. - sleep 10+ hours. - i barricaded the kitchen door. Ion play.
#5
How this differed from my baseline : - my average is usually 20k steps. I usually consider 16k a minimum. - i normally eat an average of 2000 cal per day. - I'm used to going straight to the kitchen when I come home, to grab a fruit or make myself a latte.
#6
How i kept busy : °went to the library from opening to closing hours °studied, organized my uni lectures °deep cleaned my appartment (kitchen aside) °updated my CV and applied to a plethora of student jobs °tried on clothes at the mall °read books (philosophy) (Rousseau)
#7
°drew my ocs (i am cringe & i am free) °painted my nails °extended skincare and body care routine °called my mom & the other family members I love but don't talk to so often °posted clothes on Vinted °chilled in bed listening to ASMR or watching YT
#8
My main takeaway : I was able to hit proper ketosis! I felt great!! Sharp minded, stable, calm. That was thanks to not drinking any 0kcal beverages / energy drinks apart from the small amounts of homemade coffee i planned. If you have a trouble fasting, try cutting them out!
#9
Other takeaways : - Urges to eat are much easier to control than i previously thought. Writing them down is a truly powerful tool! - Fasting is unfortunately quite lonely. Can't really spend time with anyone irl, so you have to plan accordingly.
#10
- Systems > discipline. If i hadn't pushed a desk in front of the kitchen door, made sure i was out of the house as much as possible, stocked up on things to do, prepared coffee in case of emergency, it would have been much more difficult.
#11
- i felt noticeably worse on day 3. Unable to do anything, nauseous, needing to sit down from just standing up. I still dragged myself through the 13k steps i promised but almost threw up and fainted multiple times. I'll respect my body next time and stick to 40-50h fasts.
#12
Results : I wasn't expecting to see a difference, but I kinda do! I don't own a scale so i can't put a definite number to it. I'm definitely going to fast again soon!
#13
End of thread 🖤