I think it has to do with the brine’s antidiuretic effects. College football and NFL teams now stock coolers of pickle juice during summer workouts to avoid dehydration.
“... now stock coolers of pickle juice during summer workouts..”
What’s old is new again. My son’s coach is 48 years old. He suggested pickle juice for the football players since it worked so well “when he was in high school”. Granted... if you aren’t a pickle lover the juice can go down might rough.