note NY Times so subscription only but this gift link may open it, not sure.
Interesting to hear from someone who has walked hundreds of miles in hot deserts.
Max Calderan is a self-titled “Son of the Desert”. He has walked over 700 miles of the Arabian Peninsula at over 115 degrees. He holds 14 worlds-first in desert exploration, among them walking 90 consecutive hours to cross Oman.
He knows a thing or two about keeping hydrated.
This is what he thinks the best drink is: " The best energy drink ever is water with some lemon juice and a small quantity of salt. Drink that during the day. Drink small quantities of water often, every 15 or 30 minutes."