First 72 hour fast a success

I am approaching the end of my first ever 72 hour water fast (2 hrs to go). I can't believe how good it has been. This group has been great for information and inspiration. I have been doing 16-8 everyday for the last 3 years, and started a strict keto diet at the start of 2026. Maybe it is these factors that have made it easy. I initially set out to do 24 hours, that was a breeze, so I then extended it to 36, then 48 and I felt so good at 48 that I thought, heck, why not go all the way and do 72, and here I am. I drank water periodically and used a magnesium spray at night. I walked my kids to school and back (10 minutes one way, 20 round trip) twice a day in all three days. Felt a little light headed, but otherwise fine. Only got my heart rate up to around 100bpm, so it wasn't too much. I worked from home the last 3 days so that kept me occupied. I only started to think about food today on the last day, cravings rather than hunger. I haven't felt hungry at all the whole time which is great, so I must be in ketosis. Not sure how much weight I have actually lost, I think about 2 kg, which is astounding. I'm going to do this regularly every month. Thanks to everyone here for the great info and inspiration through your shared knowledge xx