Encore: How much water do you actually need? Here's the science
Briefly

MARY LOUISE KELLY, HOST: Many of us feel tethered to our water bottles because we've been told that being hydrated is key to being healthy.Our Life Kit and Short Wave colleagues teamed up to talk about what science says about hydrating.Turns out much of the lore is due for an update.Short Wave hosts Emily Kwong and Aaron Scott take it from here.
Read at www.npr.org
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