Reminds me of a working trip to Japan about 12 years ago. To complete a job on time, we worked non-stop for almost 36 hours and I drank lots of coffee to keep me awake. One of my Japanese hosts drank a canned drink called .........
wait for it ......
SWEAT!!!
Apparently, it is an isotonic drink and the adverts say it replaces any water that you sweat whilst exercising - hence the name. I didn't take him up on his offer of a can.
Colin