Fatigue will set in at some point. Riding with fatigue is less than smart behavior.
It's been proven that the human brain never needs "rest" -- merely a change of pace/thought. Proof being the fact that your brain becomes _more_ active during sleep.
When you don't feel 100% focus, and when you feel your mind drift, take the next exit, get off the bike, walk around, stretch, talk to random people about random stuff, give your mind a chance to switch gears.
We've all had that 'wakeup call' when we narrowly avoid a dangerous situation and we wonder "where was my brain... I should have seen that a mile away..."
^^ that's fatigue. Your goal is to avoid it before you get into trouble or have that thought reversion reflex review.
Good luck and try for consistency. Eat small amounts, drink small amounts, keep things level and don't take anything to extremes. Be smooth, flow.. Ride safe, and enjoy the ride
