Has anyone ever tried to do a water fast where you don’t eat you only drink water for 24 hours?

What about a 24 hour fast in general where you don’t eat or drink anything for 24 hours?

I did the one time eating thing today. OMAD. I ate all my calories for the day from 7:30-8:30AM and I’ve been fasting since.

Has any of this worked for you? I’ve lost 18 pounds since Thanksgiving.