“... and drink plenty of water.”
I read a story about a bike rider on some back trails in the desert. He still had water in his bottles, but his body needed electrolytes to process the water. (I didn’t know that was a thing). He was in really bad shape, cramping up, couldn’t ride anymore, etc. Luckily he had a locator beacon and a plan with some friends that lived an hour away and they rescued him.
He should have been carrying Brawndo. It has electrolytes, which bike riders crave.