I am now at the beginning of my 5th day of not eating. So far so good.
Last meal was on Thursday for lunch, rather low carb, as in the days before.
-Friday as first full day was fine. Did an early morning group ride (37km), which was social, so I was well in my lower half of my Z2 as well as commuting to work (8km)
-Saturday morning was the first time when I thought “What the hell am I doing?” Woke up, got up and felt weak and without energy. After drinking 1l of water with 1.0g of Salt I went back to bed. Got up again after an hour and man… did I feel good. Had a black coffee and went out to cycle 50+km
-Sunday… never change a winning team… so lots of water and sodium it is. Since my sweat was super salty on Saturday I reduced it to 0.5g. One black coffee and joined a 60km Sunday coffee group ride. Needless to say I was the slowest one. I try to stay within the lower half of my Z2 and don’t want to push 300w to accelerate once we slowed down. Most amazing thing is however, that during coffee time everybody had sandwiches and cakes around me, but I did not care. Hunger is certainly not an issue.
-Monday… bloody Monday. Joined again our daily morning group ride. On the way to the meeting point I already felt that going in my lower Z2 is more a challenge than the days before. Supposed to be a slow day. But it seems that it attracts those riders, which don’t want to get dropped on the fast days and then they show off… Caught on for maybe around 10km, but the high speed and frequent acceleration put too much a burden on my (fat burning) system. As I intended to finish the ride and not fall from my bike like a Zombie I dropped… and so did my average power every 5km. The ride became a recovery ride from Power Zones point of view. For sure did not feel like this. Wonder if this is because on day 4 the energy system changes more or because I did 200km the previous 4 days and I just need a rest day. (My weekly target is around 200km, recently a bit more cause I have to catch up with my annual goal)
I am really thrilled that cycling is still possible during an extended water fast. 1-2h no problem and if you keep hydration and pace under control even longer rides should not be a problem.
Despite my available power being much lower, I notice that I don’t feel a lack of energy. On rides (even in my Z2) where I had food before, or the day before, I notice that after some time energy goes down. It is not a hard bonk, but its little cousin. This is not the case anymore. I’d assume because the body is exclusively running on fat since Saturday and I have plenty of that to offer.
In regards to weight I lost an average of 0.9kg or 2 pounds a day. For sure most is used up glycogen in the liver and water. But 1-1.5kg should be pure fat. Let’s see how the journey goes on.