"Drinking a glycerol solution before a long hot endurance event is
probably worthwhile for those athletes who don't drink enough fluid before and during the event. More research is needed to determine whether there is any benefit for athletes who do drink well."
It's used to hydrate the muscles for people who aren't getting enough water in the first place....
I'd never supplement with it personally, as I've no need.
As for the beach, I'd rather be hydrated, and comfortable, than dehydrated in the sun to please some bikini-tease..... fuk em.
