Interesting that its basically caffeine - but the culture of drinking mate is more similar to "smoking a cigar" ie slow time for deep thinking.
(I know that is supposed to hit slowly due to whatever other compounds, but its not my experience)
(I know that is supposed to hit slowly due to whatever other compounds, but its not my experience)
1. Coffee doesn't have a net negative hydration effect.
2. Both coffee and yerba mate appear to contain "mineral salts". And you certainly piss drinking the latter just like you do drinking any liquid.