Originally Posted by
holytrousers
There is one thing about fasting metabolism that i don't understand.
If i don't eat anything, i can ride the whole day and never feel tired. My energy levels even peak in the evening on my way back home. I commute 90 km for 3.5 to 4 hours.
When i get back home, i eat a lot.
The next day however, i feel very tired and i can't ride fasted.
How does the metabolism work so it prevents me from fasting the next day ?
Fatigue -- boy I don't know!
Fatigue: it's a feedback system that prevents us from exercising to death. It's mysterious and poorly understood.
Even a mouthwash of sugary liquid can improve performance. So why not a feedback that says "hey, if you're going to exercise without eating, I'm going to make you slow down"?